This Autographed Leonard Coleman Onl Baseball has been Personally Signed by Jim Leyland, Al Leiter, Moisés Alou, Charles Johnson, Matt Whisenant, Tony Saunders, Bruce Kison, Milt May, Robb Nen, Jerry Manuel, Jeff Conine, Devon White, Pat Rapp, John Cangelosi, Kurt Abbott, Rick Helling, Gregg Zaun, Bobby Bonilla, Dennis Cook, Gary Sheffield, Jay Powell, Jim Eisenreich and others of the Miami Marlins. 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.