This BROWNS MIKE MCCORMACK SIGNED CARD 1989 SWELL GREATS #125 PSA SLABBED #83743530 has been certified authentic. It comes slabbed and authenticated by PSA/DNA. You can also see the authentication on the PSA/DNA website, PSAcard.com.
This product comes fully certified with a Certificate of Authenticity and tamper-evident hologram and is fully backed by Supersportscenter.com's Authenticity Guarantee.