Skip to main content

Small Antique Silver

to
153
925
746
820
778
778
327
186
157
134
125
118
103
71
68
57
43
29
25
18
17
16
12
11
11
10
10
9
7
7
7
7
6
6
5
4
3
3
2
2
1
1
1
16
15
11
9
9
Sort By
Meissen, Three Pieces Blue Onion, Cup Without Handle, Low Cup and Small Plate
Located in København, Copenhagen
Meissen, three pieces Blue Onion - cup without handle, low cup and small plate. Approx. 1900
Category

Early 1900s German Small Antique Silver

Materials

Porcelain

Spanish Small Basin of Glazed Ceramic in Brown Decorated in the Central Part
Located in Marbella, ES
Spanish small basin of glazed ceramic in brown decorated in the central part.
Category

19th Century Spanish Small Antique Silver

Materials

Ceramic

Small Creamware Tureen with Brown Grapes Decoration England Circa 1820
By Spode
Located in Katonah, NY
This charming small creamware tureen showcases the "Brown Grapes" pattern, a refined Neoclassical
Category

Early 19th Century English Country Small Antique Silver

Materials

Creamware

Quality Antique Hand Painted Masons Ironstone Small Jug and Bowl
Located in Suffolk, GB
Quality antique hand painted Masons Ironstone small jug and bowl with fantastic quality hand
Category

Early 20th Century English Small Antique Silver

Materials

Ceramic

Small Meissen Pink Rose Lidded Tureen in Hand-Painted Porcelain with Gold Edge
Located in København, Copenhagen
Small Meissen pink rose lidded tureen in hand-painted porcelain with gold edge. Early 20th century
Category

Early 20th Century German Small Antique Silver

Materials

Porcelain

Six small Meissen Pink Rose bowls in hand-painted porcelain with gold edge.
Located in København, Copenhagen
Six small Meissen Pink Rose bowls in hand-painted porcelain with gold edge. Early 20th century
Category

Early 20th Century German Small Antique Silver

Materials

Porcelain

A Minton Majolica Stag s Head Small Taza in Cobalt Blue, English, ca. 1868
By Minton
Located in Banner Elk, NC
A Minton Majolica Small Tazza formed as a shallow bowl supported by a horn and naturalistic stag's
Category

19th Century English Victorian Small Antique Silver

Materials

Majolica

Very Small 19th Century French Green Yellow Glazed Terracotta Bowl or Tian
Located in Buisson, FR
Beautiful weathered piece of pottery from the Provence. Great color and rare small size. Lovely to
Category

19th Century French French Provincial Small Antique Silver

Materials

Terracotta

17/18thC Cambodian Silver Buddha-Rare Solid Cast Miniature 9834
Located in Ukiah, CA
of the silver, but it looks to be nearly pure. This style of small silver Buddha was very popular in
Category

17th Century Laotian Small Antique Silver

Materials

Silver

Georgian Mason s Very Small Ironstone Jug or Pitcher Basket Japan Ptn, Ca 1820
By Mason s Ironstone
Located in Lincoln, Lincolnshire
This is a good, early and very small Mason's Ironstone hydra jug or pitcher in the Basket Japan
Category

Early 19th Century English Georgian Small Antique Silver

Materials

Ironstone

Vintage "Michigan Avenue" Blue Transferware Small Plate by Johnson Brothers
By Johnson Brothers
Located in Colorado Springs, CO
back with eagle, title, and "Johnson Bros. England" patent number. Two small stains on the back, front
Category

1870s English Victorian Small Antique Silver

Materials

Ceramic, Pottery

Rare PAIR Masons Ironstone small Vases Fence Rock Gold Flower Pattern, Ca 1820
By Mason s Ironstone
Located in Lincoln, Lincolnshire
This is a fine and RARE pair of small or miniature Mason's ironstone Vases or Urns, hand painted in
Category

Early 19th Century English Chinoiserie Small Antique Silver

Materials

Ironstone

Delft - Small blue and white Delftware Lotus plate, mid 18th century
By Delft
Located in DELFT, NL
Delft faience plate of rare small size with a blue and white decoration inspired by Chinese Kangxi
Category

Mid-18th Century Dutch Chinoiserie Small Antique Silver

Materials

Earthenware, Delft, Faience

Art Nouveau Small Breakfast Utensils Meat Fork, Butter Knife, Spoon German 1920s
Located in Nuernberg, DE
brings vintage warmth and style to any table. The collection includes two small meat forks, a butter
Category

1920s German Art Nouveau Small Antique Silver

Materials

Stainless Steel

Small Majolica Leaves Handled Oval Platter Choisy le Roi, circa 1890
By Choisy-le-Roi
Located in Austin, TX
Small Majolica Leaves Oval Handled Platter Choisy le Roi, circa 1890. 9.7 by 5.4 inches.
Category

1890s French Rustic Small Antique Silver

Materials

Ceramic, Faience

Unusual Small Antique George III Quality Oval Shaped Copper Kettle
Located in Suffolk, GB
Unusual small Antique George III quality oval shaped copper kettle having an unusual small Antique
Category

Early 19th Century English George III Small Antique Silver

Materials

Copper

Unusual Set of 4 Small Antique Japanese Quality Imari Dishes
Located in Suffolk, GB
Unusual set of 4 quality antique Japanese Imari Dishes in wonderful hand painted red, green, blue and gold colours with a scalloped edge A charming set in fabulous original conditi...
Category

Early 20th Century Japanese Small Antique Silver

Materials

Porcelain

Small French Faience Oval Platter Model Italia Sarreguemines, Circa 1890
By Sarreguemines
Located in Austin, TX
Small French Faience oval platter Model Italia signed Sarreguemines circa 1890. Rare pattern
Category

1890s French Arts and Crafts Small Antique Silver

Materials

Ceramic

Carafe with Stopper and Set of 6 Small Wine, Liqueur Glasses
By Val Saint Lambert
Located in Verviers, BE
Carafe with Stopper and set of 6 Small Wine - liqueur Glasses Please don't hesitate to get in
Category

Early 20th Century Belgian Post-Modern Small Antique Silver

Materials

Art Glass

Indian Silvered Bronze Buddhist Deity Vajradhara Seated in Lotus Position
Located in Stamford, CT
Wonderful small silvered bronze of Vajradhara. Indian, circa 1900. 7 inches high by 4 wide by 3
Category

Early 20th Century Indian Small Antique Silver

Materials

Bronze

Early 20th century French Silver Plated Set of 12 Spoon and one Clamp
Located in LEGNY, FR
Very nice box composed of twelve silver plate small spoons and a clamp dating from the beginning of
Category

Early 20th Century French Small Antique Silver

Materials

Silver Plate

Small Italian Faience Dish Of a Lady, Circa 1920 s
Located in Haddonfield, NJ
1920's Faience Dish Of a Lady, Italy Charming Italian dishes of a a figurative woman representative of the 1920's era in Florence, Italy. This would a wonderful display piece on ...
Category

Early 20th Century Italian Folk Art Small Antique Silver

Materials

Faience

Unusual Set of 4 Small Antique Japanese Quality Imari Dishes
Located in Suffolk, GB
Unusual set of 4 quality antique Japanese Imari Dishes in wonderful hand painted red, green, blue and gold colours with a scalloped edge A charming set in fabulous original condi...
Category

Early 20th Century Japanese Small Antique Silver

Materials

Ceramic

Engraved Bohemian Crystal Oil and Vinegar Set, a Small Salt Shaker, Napoleon III
Located in Saint-Ouen, FR
Oil and vinegar set and small salt cellar in engraved Bohemian crystal, Napoleon III period, 19th
Category

19th Century French Napoleon III Small Antique Silver

Materials

Crystal

19th Century Imari Porcelain Small Plate, Blue, Red and White, Japanese 1800s
By Imari Porcelain
Located in Worcester Park, GB
The image shows a piece of Imari ware, a style of Japanese porcelain produced in Arita and exported from the port of Imari. This type of porcelain is known for its vibrant colors, ty...
Category

Mid-19th Century Japanese Victorian Small Antique Silver

Materials

Ceramic

WAS Benson. A good quality small Arts Crafts copper and brass teapot
By W.A.S. Benson
Located in London, GB
W A S Benson. A good quality small copper and brass teapot.
Category

Early 1900s Arts and Crafts Small Antique Silver

Materials

Copper

Antique English Footed Silver Plated Gallery Serving Tray with Floral Decoration
By Viners 1
Located in Hamilton, Ontario
This small and well made silver plated serving tray was made by Viners of Sheffield England in
Category

Early 20th Century English Edwardian Small Antique Silver

Materials

Silver Plate

Small Antique Edo Period Japanese Porcelain Teapot Imari Red Gold Panels
Located in Amsterdam, Noord Holland
Small teapot, square, rounded body on flat unglazed base. Curved handle and a short straight spout
Category

17th Century Japanese Small Antique Silver

Materials

Porcelain

Set of 3 Small Swedish Cobalt Blue Hand Blown Glass Bowl or Trinkets
Located in Haddonfield, NJ
Set of three Small Swedish cobalt blue hand blown glass bowl or trinkets.
Category

Late 19th Century Swedish Folk Art Small Antique Silver

Materials

Blown Glass

Two Extra Small Dutch Delft Tobacco Jars: no 5 6, 18th Century
By De Klaauw
Located in AMSTERDAM, NH
small sizes are highly unusual and very rare to find! Marked with the Claw symbol. In the 18th century
Category

1760s Dutch Rococo Small Antique Silver

Materials

Ceramic, Delft, Faience

Antique Royal Crown Derby Chinoiserie Styled Five Small Cup Saucer Sets
By Royal Crown Derby Porcelain
Located in Hamilton, Ontario
These five small cup and saucer sets, and one additional saucer, were made by the well known Royal
Category

Mid-19th Century English Chinoiserie Small Antique Silver

Materials

Porcelain

19th Century Smith Bartlam EPNS Finger Coin Purse
Located in Guaynabo, PR
sterling silver purse decorated with a high relief of scrolls of acanthus leaves, small and large flowers
Category

19th Century English Victorian Small Antique Silver

Materials

Silver Plate

Georgian Masons Ironstone Small Dish or Platter in Peacock Japan Ptn, Ca.1815
By Mason s Ironstone
Located in Lincoln, Lincolnshire
This is a very decorative Mason's Ironstone pottery small dish or platter produced by the Mason's
Category

Early 19th Century English Chinoiserie Small Antique Silver

Materials

Ironstone

Plate Delftware, English Small Stylised Floral Spray London, Blue and White
Located in BUNGAY, SUFFOLK
Decorated with a stylised fern surrounded by a double-circle petal shaped border and an arc border around the rim. Decorated in blue on blue glaze. In original condition. Probably Lo...
Category

18th Century English Chinoiserie Small Antique Silver

Materials

Earthenware

Set of Small Porcelain Serving Dish, in Wooden Box, China, 19th Century
Located in Auribeau sur Siagne, FR
. Some have a small chip, see detailed pictures. It has been made in China 19th century.  
Category

19th Century Chinese Chinese Export Small Antique Silver

Materials

Porcelain

Thirty Six Silver Miniatures of Vintage Cars, Italy, Early 20th Century
Located in Roma, IT
Italy. The group includes thirty six small silver miniature in a blue velvet box. Original silver
Category

Early 20th Century Italian Small Antique Silver

Materials

Silver

Matthews English 1911 Sterling Silver Repousse Heart-Shaped Jewelry Box
By Henry Matthews
Located in New York, NY
is particularly remembered for his small silver items that required great attention to detail
Category

1910s English Edwardian Small Antique Silver

Materials

Silver, Sterling Silver

Small French Palissy Majolica Comport with Cabbage Leaf Emile Gambut, Circa 1879
By Emile Gambut
Located in Austin, TX
A rare small French palissy majolica comport with cabbage leaf signed Emile Gambut and dated 1879
Category

1870s French Rustic Small Antique Silver

Materials

Ceramic

Pr of 19th c French Faience Poly-Chrome Painted Small Pitchers With Hinged Lids
Located in valatie, NY
Rare Pair of 19th c French Faience Poly-Chrome Painted Small Pitchers With Hinged Lids. The
Category

Late 19th Century French Small Antique Silver

Materials

Earthenware

Georg Jensen Art Nouveau Silver Dresser Box 79 Pill Jewelry Ring Box 1915-1932
By Georg Jensen
Located in New York, NY
small silver dresser box by the master silversmith Georg Jensen which can be used as a jewelry box, ring
Category

Early 20th Century Danish Art Nouveau Small Antique Silver

Materials

Silver, Sterling Silver

Set of 4 French Victorian Small Green and White Enamel Plates
Located in Queens, NY
SET of 4 French Victorian green and white enamel on copper square shaped plates with a floral design (PRICED AS SET)
Category

Late 19th Century French Victorian Small Antique Silver

Materials

Enamel

Georgian Mason s Soup Bowl or Plate in Small Vase Flowers and Rock Ptn, Ca 1818
By Mason s Ironstone
Located in Lincoln, Lincolnshire
, Staffordshire, England and beautifully decorated in the Small Vase, flower & Rock Pattern, fully stamped and
Category

Early 19th Century English Georgian Small Antique Silver

Materials

Ironstone

Antique Sterling Silver Photo Frame Henry Mathews Birmingham 20th Century
Located in London, GB
1894, Matthews is known for his small silver items featuring beautiful detailing. Pieces include
Category

Early 20th Century English Edwardian Small Antique Silver

Materials

Sterling Silver

French Silver Mounted Mother of Pearl Engraved Box, circa 1800
Located in Bishop s Stortford, Hertfordshire
a silver metal framework attached with small silver metal pins and with a hinged cover. The panels
Category

1790s French Napoleon III Small Antique Silver

Materials

Mother-of-Pearl

English Art Nouveau Silver Pocket Watch and Stand by Henry Greaves Ltd
Located in Northampton, GB
firm active in the early to mid twentieth century, producing a wide range of small silver and plated
Category

Early 20th Century English Art Nouveau Small Antique Silver

Materials

Sterling Silver, Enamel

Mid 19th Century Victorian Silverplate Pitcher
Located in Pueblo, CO
an E monogram but it totally looks just like design - see pic. There is one small spot of silver
Category

Mid-19th Century American High Victorian Small Antique Silver

Materials

Silver Plate

Sterling Brandy Decanter Label/Bottle Ticket by Charles Rawlings, London, 1828
By Charles Rawlings
Located in West Palm Beach, FL
rampant-British standard for sterling silver Year letter-small letter “n” Leopard’s head-city of London
Category

1820s English George III Small Antique Silver

Materials

Sterling Silver

Early 19th Century German 13 Loth Silver Repoussé Landscape Box, Hanau, C. 1820
Located in West Palm Beach, FL
" W x 1.5" D x 0.75" H / 62 Grams A finely worked small silver box crafted in 13 loth silver (.812
Category

19th Century German Neoclassical Small Antique Silver

Materials

Silver

A German Four Piece Silver and Marble Brit Milla Set, Late 19th Century
Located in New York, NY
significance of the ritual. Accompanying the knife is a small silver wine vessel, ornately decorated with
Category

Late 19th Century German Small Antique Silver

Materials

Marble, Silver

Small Jade Bottle Vial with Silver Mountings
Located in Stockholm, SE
A small masterpiece. A carved bottle vial with lid carved of grey/brown jade and with decorations
Category

19th Century European Small Antique Silver

Materials

Jade, Silver

Set of 4 American Art Deco Cordial Cups
By Tiffany Co.
Located in Queens, NY
Set of 4 American Art Deco sterling silver small tapered cone shaped cordial cups resting on a
Category

1920s American Art Deco Small Antique Silver

Materials

Sterling Silver

Collection of Persian Silverware and Tableware
Located in London, GB
tall, slim vases, a ewer with group of six goblets, silver trays, a napkin holder, a small rectangular
Category

Early 20th Century Persian Islamic Small Antique Silver

Materials

Silver

Thomas Higgat. A Fine Early Silver Pair Case Verge Pocket Watch C1770
Located in Mayfair, London, London
garlands of flowers. The movement is numbered and signed Thos Higgat London. with the small silver dial to
Category

1770s British Small Antique Silver

Materials

Silver

Townshends Birmingham Aluminium and Electroplated Patent Communion Set
Located in Bishop s Stortford, Hertfordshire
communion set comprising of 24 silver plated wine cups and dated 15th April 1905. This unusual set is cut
Category

Early 1900s English Art Nouveau Small Antique Silver

Materials

Aluminum, Silver Plate

Edwardian 1905 German Enameled Round Box In .900 Silver Imported Into France
By Pforzheimer Bugholzmöbel Dietz Co.
Located in Miami, FL
a swan facing to the left inside an oval (Osprey-124), was introduced in 1893 for small silver items
Category

Early 1900s German Edwardian Small Antique Silver

Materials

Silver, Sterling Silver, Enamel

14kt Yellow Gold Diamond Turquoise Triple Strand Cultured Pearl Bracelet
Located in Monroe Township, NJ
ornate and has a large turquoise cabochon surrounded by small silver toped rose cut diamonds Dates
Category

Early 20th Century English Victorian Small Antique Silver

Materials

Diamond, Turquoise, Cultured Pearl, Yellow Gold

Beautiful quality antique Victorian Carlton Ware biscuit barrel
Located in Ipswich, GB
floral pattern on a white ground, above a raised lattice band with small bead detailing, with a silver
Category

Late 19th Century British Small Antique Silver

Materials

Porcelain

  • 1
  • ...
Get Updated with New Arrivals
Save "Small Antique Silver", and we’ll notify you when there are new listings in this category.

Small Antique Silver For Sale on 1stDibs

At 1stDibs, there are many versions of the ideal piece of small antique silver for your home. Frequently made of metal, silver and ceramic, every item from our selection of small antique silver was constructed with great care. Your living room may not be complete without a choice in our collection of small antique silver — find older editions for sale from the 18th Century and newer versions made as recently as the 20th Century. An object in our assortment of small antique silver is a generally popular piece of furniture, but those created in Victorian, Art Nouveau and Georgian styles are sought with frequency. A well-made option in this array of small antique silver has long been a part of the offerings for many furniture designers and manufacturers, but those produced by Mason's Ironstone, Coalport Porcelain and Georg Jensen are consistently popular.

How Much is a Small Antique Silver?

The average selling price for a piece of small antique silver at 1stDibs is $686, while they’re typically $30 on the low end and $28,000 for the highest priced.
Questions About Small Antique Silver
  • 1stDibs ExpertApril 26, 2024
    What antique silver is depends on the context. In many cases, the term refers to silverware and silver decorative objects produced more than 100 years ago. However, antique silver may also be the name of a distressed silver finish frequently used on lighting fixtures and bathroom fixtures. Explore a selection of antique silver wares on 1stDibs.
  • 1stDibs ExpertFebruary 13, 2023
    The difference between silver and antique silver is age. Items of any age made of silver or a silver alloy may be called silver. The term antique silver refers to silver pieces that are at least 100 years old. On 1stDibs, shop a range of antique, vintage and modern silver tableware and decorative objects.
  • 1stDibs ExpertApril 5, 2022
    Whether or not antique silver is real depends on the piece. Sometimes, manufacturers simply call a gray-silver finish antique silver. In these cases, the item is usually not real silver. It is possible for antique silver to be pure silver, sterling or silver plated. On 1stDibs, find a wide range of silver decorative objects and jewelry.
  • 1stDibs ExpertApril 5, 2022
    Silver-plating refers to the process of applying a thin layer of silver overtop of a base metal, such as copper, nickel or pewter. An antique silver-plated item would have gone through this same process. Shop a collection of expertly vetted antique silver plate items from some of the world’s top sellers on 1stDibs.
    1stDibs ExpertApril 5, 2022
    Antique silver plates are antique plates made from either pure silver or have been silver-plated. Silver is a timeless material that’s been popular for centuries, and antique silver is always highly regarded. Shop a collection of antique silver plates from some of the world’s top sellers on 1stDibs.
  • 1stDibs ExpertNovember 4, 2024
    To identify silver antiques, search for a maker's mark on the base, handle, interior and other inconspicuous areas. Using trusted online resources, research the maker to find out when it was in business and browse online catalogues and image galleries, looking for pieces that resemble yours. Doing so can help you get a rough idea of when your silver objects were manufactured. To be classified as antique, an item must be at least 100 years old. A certified appraiser or knowledgeable antique dealer can also assist with the identification process. On 1stDibs, explore a range of antique silver decorative objects.
  • 1stDibs ExpertApril 12, 2024
    What antique silver is made of varies. In most cases, antique silver is sterling silver, which is 92.5% pure silver and 7.5% alloys. You can also find antique silver jewelry and decorative objects made out of other silver alloys, like fine silver, which is 99.9% silver and only 0.1% alloys. On 1stDibs, shop a variety of silver pieces from some of the world's top sellers.
  • 1stDibs ExpertMarch 22, 2022
    Antique silver plating is a thin layer of genuine silver applied over top of a base metal. Depending on the piece, the main metal may be copper, brass or nickel. You'll find a range of antique silver-plated decorative objects on 1stDibs.
  • 1stDibs ExpertApril 5, 2022
    Sterling silver is an alloyed form of silver, and is made up of 92.5% fine silver and 7.5% copper. An antique sterling silver item will have the same silver content and will be over 100 years old. Shop a collection of expertly vetted antique sterling silver from some of the worlds top sellers on 1stDibs.
  • 1stDibs ExpertOctober 19, 2021
    Antique silver is a type of silver that is at least a century old. Find a diverse range of intricately designed, elegant antique silver decorative objects and more on 1stDibs.
  • 1stDibs ExpertMay 5, 2023
    Whether antique silverplate has any value depends on a variety of factors. The design of the piece, who made it and decoration are among the biggest determiners of value. Generally, rarer pieces that remain in good condition will be worth the most. Today, just as pewter collectibles and sterling silver are popular with collectors at neighborhood flea markets, antique Sheffield silverplate housewares are sought after for their appearance and rich history. Consider having the piece evaluated by a knowledgeable antiques dealer or certified appraiser to get an accurate estimate of how much it's worth. On 1stDibs, find antique silverplate from some of the world's top sellers.
  • 1stDibs ExpertApril 5, 2022
    Sterling silver is considered antique if it was made over 100 years ago. Many antique sterling silver items will have a mark or stamp. First, clean the item and check for marks. A “925” mark indicates a silver purity of 92.5 percent, which is the composition of sterling silver. If you don’t see a mark, work with a certified appraiser to acid test the item and determine the silver content. You’ll find expertly vetted antique sterling silver items on 1stDibs.
  • 1stDibs ExpertAugust 20, 2024
    Whether antique silverware is real silverware or not varies. Many antique flatware pieces feature silver plate, so they consist of a base metal beneath a layer of genuine silver. There is also flatware made entirely from sterling silver, which is an alloy that is 92.5% silver and 7.5% base metal. Researching the hallmarks found on your silverware using trusted online resources can help you determine whether the items are sterling silver or silver plate. A certified appraiser or knowledgeable antique dealer can also assist you. On 1stDibs, shop a large selection of antique silverware.
  • 1stDibs ExpertAugust 8, 2024
    Yes, some antique sterling silver is valuable. Sterling silver of any age has value as a material because it is a precious metal. Some pieces may be worth even more than the going rate for sterling due to their maker, style, type and condition. Some silversmiths whose pieces are often in demand among collectors include Tiffany Co., Georg Jensen, Gorham Manufacturing Company and Towle. On 1stDibs, find a diverse assortment of antique sterling silver wares.
  • 1stDibs ExpertApril 5, 2022
    To tell if a silver spoon is an antique, seek the assistance of a licensed and experienced appraiser. Many antique pieces lack marks, and it is generally not possible to determine the type and age of metal through a simple visual inspection. Shop a collection of expertly vetted antique silver spoons on 1stDibs.
  • 1stDibs ExpertFebruary 22, 2021
    While antique silver plate can be worth something, it is not usually as valuable compared with contemporary pieces or similar sterling silver antiques.
  • 1stDibs ExpertAugust 15, 2024
    Yes, some antique silver plate is worth something. However, any value that a piece has usually comes from its rarity rather than from the cost of its materials, because silver plate contains very little pure silver. There is generally a demand for certain older pieces by Christoffle, Elkington Co., Mapp Webb and other well-known manufacturers. A certified appraiser or knowledgeable antique dealer can evaluate the condition of your piece and give you an idea of how much it is worth. On 1stDibs, shop a variety of silver plate tableware, serveware and decorative objects.
  • 1stDibs ExpertSeptember 16, 2024
    Yes, some silver-plated antique silverware may be worth something. Antique pieces are 100 years old or older, and because of their age, pieces in good condition may be sought after by collectors due to their rarity. The maker, style and type will also impact the potential resale value. In terms of value as scrap metal, antique silver-plated silverware usually isn't worth much because silver plate is made only from a small amount of pure silver. To get an estimated value for your silverware, consult a certified appraiser or experienced antique dealer. Explore a wide range of antique silverware on 1stDibs.