2 Year AA Medallion Sobriety Chip In Removable Gold Plated Keychain Holder 2 Year AA Medallion with Keychain Chip Holder Keychain is 18k Gold Plated with bezel that unscrews allowing you to replace the medallion with another 33mm coin. Comes with a 2 Year AA Medallion / Serenity Prayer coin. You can change out the coins as you want or insert new medallions you receive. Excellent 2nd year of sobriety gift.