How can you tell if a vintage Gucci watch is real?

To tell if a vintage Gucci watch is real, look for a serial number on the back of the case and/or on the original box if you have it. Then, contact Gucci customer service by phone for assistance with authentication. If you are unable to find a serial number, the best approach is likely to take the timepiece to a knowledgeable appraiser who can authenticate the item. Find a range of Gucci watches on 1stDibs.