This Autographed American Seating Shea Stadium Seatback has been Personally Signed by Nolan Ryan, Yogi Berra, Tom Seaver, Jerry Koosman, Ken Boswell, Ed Charles, Duffy Dyer, Wayne Garrett, Gary Gentry, Jim Gosger, Jerry Grote, Bud Harrelson, Al Jackson, Cleon Jones, Ed Kranepool, J.C. Martin, Jim McAndrew, Amos Otis, Art Shamsky, Ron Taylor, Al Weis, & Joe Pignatano of the New York Mets. This item is 100% Authentic to include a Certificate of Authenticity (COA) / hologram by Beckett Authentication Services. The authenticity can be verified on Beckett Authentication Services website.