Vintage Cooperstown Collection size L signed #9 (Williams) Red Sox jersey with tags still on it signed by (12) members of the 500 HR club. Signatures include: Ted Williams, Frank Robinson, Reggie Jackson, Mike Schmidt, Ernie Banks, Hank Aaron, Willie Mays, Willie McCovey, Harmon Killebrew, Eddie Mathews and Eddie Murray. We had this item reviewed by 2 experts. One was a former JSA employee and the other was an independent authenticator. Both experts were 100% certain of authenticity on all signatures except Mantle. Both experts said there were characteristics of the signature that were a little ‘off’. With that in mind, we are officially letting our bidders know that the Mantle signature may be secretarial and the starting price of this item reflects this.