This is a vintage Lowenbrau Thermo-Serv plastic mug that was used for advertising in bars. The mug has a German beer theme and is a part of the breweriana collectibles. It was made in the United States and has the Lowenbrau brand name on it. The mug is designed to keep the beer cold and is a great addition to any beer lover's collection. The mug has damage please review photos of the crack.