Individual signatures of four Rat Pack members: vintage fountain pen signature, “Sincerely, Frank Sinatra,” on a light pink 7 x 5 album page; vintage ink signature, “Sincerely, Peter Lawford,” on a red, white, and blue Naval Aid Auxiliary card; ballpoint signature, “My best, Sammy Davis, Jr.,” on a pink 6 x 4 card; and a Bel Air Country Club beverage check, signed in pencil, “D. Martin.” Davis and Lawford’s signatures are accompanied by certificates of authenticity from PSA/DNA, and Martin’s check is accompanied by a letter of authenticity from PSA/DNA. In fine condition, with collector’s notations above and below Sinatra’s signature, and mild toning to Lawford’s card. RRAuction COA.