Edgar Martinez Autographed 1988 Procards Rookie Card #782 Seattle Mariners Beckett BAS Stock #147105 Jersey A professional style white custom A professional style white custom replica basketball jersey autographed by Jack Sikma and authenticated by PSA You can read more about all the qualified companies that we use to ensure the authenticity of all our autographs and their different types of certifications on our Authentication Services and Certificates page This is a 1988 Procards Rookie Card #782 that has been hand signed by Edgar Martinez It has been certified authentic by Beckett Authentication (BAS) and comes encapsulated in their tamper proof holder