1 oz .999 Pure Copper Comes in a 2" x 2" clear vinyl protective presentation sleeve Diameter = 39 mm (1.54 in.) ~ Slightly larger than a US Silver Dollar Thickness = 2.5 mm (0.098 in.) Gross Weight = 1 Avoirdupois ounce (28.35 grams) These were produced in limited quantities. It is very likely these round will increase in value quickly as they are becoming increasingly more difficult to find. Our inventory of this round is VERY LIMITED! These make great gifts for friends and family members!