SAMMY SOSA SIGNED HR TROT WITH USA FLAG TICKET STUB 9/27/2001 PSA 145719053 VG 3

Authentication

Certified by an independent third party

We do not authenticate our own inventory. Signatures are examined by an outside authentication house — PSA/DNA, JSA or Beckett Authentication Services — and the certificate they issue travels with the piece. Autograph authentication is an opinion on whether a signature is genuine; it is a separate service from condition grading, which assigns a numeric grade to an item’s state of preservation.

Authenticated by

Professional Sports Authenticator (PSA)

Certificate number

145719053

How authentication works, in full