This New York Sack Exchange football jersey has been personally signed by Mark Gastineau, Joe Klecko, Marty Lyons and Abdul Salaam.

Authenticity is documented by James Spence Authentication (JSA) as a Witnessed In-Person Transaction (WITNESS ITP); the JSA certification number is WIT636366 and the piece includes the JSA Witness sticker and COA.

An outstanding collectible for fans of the New York Sack Exchange and vintage defensive-line memorabilia.