This Autographed Green Pro Style Jersey has been Personally Signed by Giannis Antetokounmpo of the Milwaukee Bucks. 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. This is a X-Large sized, non-branded, custom-stitched Jersey. This jersey will not come with its matching Beckett COA Card. However, its authenticity can still be searched and verified in Beckett's database.