Pewter is an alloy primarily composed of tin, with small amounts of copper and antimony added. It is known for being rust-resistant and having excellent cooling properties. Some products use an alloy of 97% tin and 3% copper. This is a set of 2 wine glasses, featuring durability and a stylish design. *There are two small black marks on the bottom of one glass, near the base of the stem. Please see the last photo. - Brand: Selangor - Design: Wine glass style - Quantity: Set of 2 These glasses have a substantial weight. Please use them for chilled white wine, etc. ^ ^ Thank you for looking.