This Mid Century D-handle Fire King white glass coffee mug by Anchor Hocking is part of their Game Birds series, depicting mallard ducks. The mug is 3-1/2 inches high by 3-1/4" diameter at the rim, marked Fire King Oven Ware Made In U.S.A. It's in excellent, glossy condition with no stains or damage and no wear or fading to the design.