This Autographed Warren Giles Onl Baseball has been Personally Signed by Roberto Clemente; Bennie Daniels; Paul Smith; Bob Friend; Bob Purkey; John Powers; George Witt; Hank Foiles; Pete Peterson; Gene Freese; Danny Kravitz; Nellie King; Roman Mejias; Frank Thomas; Elroy Face; Bob Skinner; Bill Virdon; Johnny O'Brien; Ronnie Kline; Bob Smith; Eddie O'Brien; Red Swanson. **Clubhouse signer** Danny Murtaugh of the Pittsburg Pirates. This item is 100% Authentic to include a Certificate of Authenticity (COA) / hologram by Beckett Authentication Services. The authenticity can be verified on Beckett Authentication Services website.