8 ounce whiskey bourbon lowball rocks glass. Marked/Etched Maker's Mark SIV on the side. Marked Libbey Duratuff U.S.A. on the bottom with the trademark Libbey L on the bottom center. With a 5 sided base the glass is 3 1/2 inches tall with a 3 7/8 inch diameter mouth. No nicks, chips or cracks.