The 2023 Panini Immaculate MARCELO MAYER Prospect Patch Auto 7/10 Encased for the Boston Red Sox is a highly sought-after trading card featuring a hard-signed autograph by the player himself. With a limited print run of only 10, this card is a rare and valuable collector's item for fans of Major League Baseball. The card includes a patch from the player's jersey, making it a unique memorabilia piece that is sure to enhance any sports trading card collection. With Panini's Authentic autograph authentication, collectors can be confident in the legitimacy of this valuable and special addition to their collection.