Gateway commemorative cover, 9.5 x 4.25, bearing a color silk cachet honoring 11 members of the 500 Home Run Club, signed in blue ballpoint by all 11 honored: Ted Williams, Hank Aaron, Mickey Mantle, Reggie Jackson, Willie Mays, Willie McCovey, Ernie Banks, Mike Schmidt, Harmon Killebrew, Frank Robinson, and Eddie Mathews. Cover is also signed by Pete Rose. In very fine condition. Auction LOA Steve Grad/PSA/DNA and R&R COA.
