18 Year AA Medallion In Elegant Black & Gold & Silver Plated With Serenity Prayer On The Back Raised graphics and recessed rim lettering filled with Black enamel. High end coin design great weight and feel due to 3mm Thickness. Plated in both Gold and Silver Roman Numeral XVIII On Front Premium quality Bi-Plate 18 Year AA Medallion in Elegant Black and Gold & Silver Plated design. Gold plating is very glossy, this coin looks like its ready for a white tie affair. Serenity Prayer on the back and designed with recessed colored lettering around the rim and raised triangle for a great look and feel. Size is 33mm or 1 5/16" diameter. 3mm Thick to give it a better "feel" and "weight" we made it 12 gauge vs the usual 14 gauge sobriety coins. When you hold it in your hand you'll know the difference. Comes in a protective vinyl envelope. If you need a keychain holder search Amazon for B01GLOWDJY which is the ASIN for the holder that works with this item.