24 Hours AA Medallion Extra Large 1.5 Inch Challenge Coin Size Sobriety Chip. This Sobriety Coin is Heavy Premium Gold and Nickel Plated Design. Known As Bi-Plated you'll be amazed by the look and feel. The back of the coin has the Serenity Prayer. Extra Thick Design For A Premium Weight And Feel. Great Gift For Members Of Alcoholics Anonymous Celebrating A Year Of Recovery.