This product is a vintage Calvary Military U.S.C.G. Night Stalker coffee mug made in England. It is a solid white ceramic and porcelain mug with a 12 oz capacity and a height of 4.5 inches. The mug features a military theme with the brand name "Calvert" and model name "Calvary" printed on it. It is suitable for both hot and cold beverages and weighs 1 lb.