Manufactured by The Libbey Glass Company, the 5110 Clear version is fairly common, but the optic blue tumblers are very rare. They are 12oz straight soda tumblers and in excellent condition. Please Note: Before I list an item for sale, I do extensive research to identify its origin, pattern, date manufactured, and authenticity. I also inspect each item very closely and disclose any imperfections I see, but my items are mostly vintage, gently used
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