This 2001 Upper Deck Vintage baseball trading card, featuring a hard-signed autograph from Mark Prior, is a must-have for any avid Chicago Cubs fan. Authenticated by Beckett Authentication Services (BAS) with authentication number 00014874779, the card is slabbed and encapsulated for protection and preservation. Made of card stock material, it is a standard size card and part of the Vintage Rookies set with a card number of 170. The Beckett encapsulation serves as the COA and is a valuable addition to any sports trading card collection. Prior's autograph, signed in black Sharpie, has been authenticated and encapsulated by the experts at BAS. Certificate number 00014874779.