Burmeister O.K. Hardware Mug, Waldorf. Material: glass. Size: 3" diameter x 3 3/8" H. Description: white milky glass mug with black printed information on front: "Burmeister O.K. Hardware, Waldorf, Minnesota, 1933 to 1983"; black graphic on back: building; backstamp on bottom in relief: "Oven Proof 28 Galaxy Made in U.S.A."