The 2012-13 SP Authentic By The Letter A.C. Green Patch Auto trading card is a limited edition collectible featuring the signature of the Oregon State Beavers basketball player. Produced by Upper Deck, this card is serial numbered and part of an insert set dedicated to NCAA athletes. With only 50 prints in existence, this autographed patch card showcases A.C. Green's unique By the Letter signature, making it a highly sought-after item for basketball card collectors.