David Cone Signed New York Yankees Jersey Inscribed "P.G. 7-18-99" (Beckett)This custom on field adult XL autographed jersey has been personally hand signed by David Cone of the New York Yankees. He added the inscription P. G. (Perfect Game) 07 18 99. This autograph is certified by Beckett Authentication Services (BAS) Witness Certification. That means that a Beckett representative was present when this item was signed. It comes with the numbered authentication hologram with a QR code that verifies the authentication on the