How can you identify Blenko glass?

To identify Blenko glass, look for markings, usually found on the bottom. Over the years, the American glassmaker has used dozens of different markings, so the best approach is to compare yours to images shared on trusted websites for reference purposes. Once you've confirmed that your piece is a Blenko, you can download Blenko glass catalogues from online sources and search for your piece to learn more about it. Alternatively, you can have an appraiser or dealer who specializes in glassware evaluate your piece. Find a wide range of Blenko glass on 1stDibs.