Experience a unique opportunity to add a rare piece of baseball history to your collection with the Matt Cain SF Giants autographed 2007 Topps Baseball Card #187 BAS Authentic Auto Slab. This highly sought-after sports trading card features an authentic autograph from the former San Francisco Giants player, Matt Cain, who contributed to the team's three World Series championships during his career (2010, 2012, and 2014). Crafted with high-quality card stock and certified by Beckett Authentication Services (BAS) with authentication number 00016506142, this card is a must-have for any fan of the San Francisco Giants or baseball in general. The signature, in Blue Sharpie, has been officially authenticated and encapsulated by the experts at BAS, with certificate number 00016506142.