Because of their fame and notoriety, autographs of members of the Rat Pack are in high demand and bring very good prices. Frank Sinatra, Dean Martin, and Sammy Davis, jr., are the most coveted, and the greater the combination of signatures the more valuable they are. Signed collectibles, like photographs, individual album covers, or personal items attributable directly to the star who signed the object can bring thousands of dollars in a competitive market. Regardless of whether you are a buyer or seller, a certificate of authenticity for each signature is of vital importance. This protects both parties in the transaction, ensuring that the autograph is legitimate and the selling (or buying) price justified.