Details of 2013-14 #131 Giannis Antetokounmpo Autograph Autograde 10 21/99 BGS BAS 9.5 have been verified by eBay’s official authenticator. eBay stands by the details on this item 100%. We stand behind the authenticity of your item, but we can’t guarantee things like relics, memorabilia, or autographs added after the fact.