The 2021 Select Baseball Robin Yount Signature Materials Patch Auto card is a limited edition collectible featuring a patch autographed by Robin Yount, a legendary player for the Milwaukee Brewers. This card is part of the 2021 Select set, made of card stock material, and is an original licensed reprint by the manufacturer Select. With only 15 cards in existence, this unique piece is a valuable addition to any baseball card collection, especially for fans of the Major League Baseball (MLB) and collectors of sports trading cards.