Description Jack McKeon is one of the most celebrated managers in the history of Major League Baseball; known for leading the Florida Marlins to an unlikely World Series championship in 2003 at the age of 72. A signed 1973 Topps card; encapsulated in a PSA/DNA slab; is a meaningful piece of baseball history. Hand signed and autographed by Jack McKeon on a PSA/DNA-slabbed 1973 Topps card Authenticated by PSA/DNA; the most trusted third-party autograph authentication service in the hobby PSA/DNA Certification Number: 28531501 Verify authenticity instantly at psacard.com Please note: PSA/DNA no longer issues physical certification cards. Authentication consists of the tamper-proof PSA/DNA holographic sticker and a permanent digital COA in their online database Ships free within the United States; carefully packaged to ensure safe arrival A PSA/DNA-slabbed signed trading card combines the protection of professional encapsulation with a directly verified autograph — one of the most compact and widely collected formats in the hobby; learn more about our authentication standard at nicksportsautographs.com/authentication.