This Autographed 3.5x5.5 Postcard with the inscription of "Don. My Best Wishes!" has been Personally Signed by Steve Garvey of the San Diego Padres. 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.