This Autographed Blue Mitchell & Ness 2010-11 Hardwood Classics Swingman Jersey has been Personally Signed by Dirk Nowitzki of the Dallas Mavericks. This item is 100% Authentic to include a hologram by Beckett Authentication Services. This item will come with an affixed Beckett Authentication Services (BAS) authentication sticker, which includes a scannable QR code to verify authenticity. Please note that Beckett no longer provides serial-numbered COA cards, and the attached BAS sticker will serve as the complete authentication for this item. The authenticity can be verified on Beckett Authentication Services website. This is a X-Large sized Jersey. There is some red staining on both the front and back of this jersey. Please refer to pictures for item's condition prior to purchase.