These are very old, and very untouched/unused. They sat in a china cabinet at my Grandparents my whole life. Purchased abroad by grandpa in the 80s or 90s. No idea how old. Google says they are: “Rare Ngan Winghing Asian Dragon Decorated Glass Lined Pewter Tankards “ Elegant silver tankard featuring an intricate dragon motif. Perfect for adding a touch of sophistication to your dining experience.