This Luis Gonzalez autographed Arizona Diamondbacks 2006 Topps Allen and Ginter baseball trading card, autographed by Gonzalez in blue sharpie, has been examined and certified authentic by an expert at Beckett Authentication Services (BAS). It is encapsulated in a tamper-proof card protector by BGS. Verification of the authentication can be done by visiting www.Beckett-Authentication.com and entering the authentication number 00013191309. Additional MLB and baseball autographed collectibles are available on our website. Notable career accomplishments include being a 5-time MLB All Star, a member of the 2001 World Series Champions AZ DBacks, and the recipient of the 2001 MLB Silver Slugger Award. Jersey number 20 has been retired by the AZ DBacks.