This WHITE SOX NELLIE FOX AUTHENTIC SIGNED 3X5 POSTCARD AUTOGRAPHED PSA/DNA SLABBED 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.