PSA/DNA Certified....But not labeled on the flip?


Card is slabed, but not labeled with the PSA/DNA Authentic on the flip? If you check the Cert # it pulls it up as PSA/DNA Certified. I have never seen on that was not labele, so what is the deal with this card?
According to the PSA Certification Database, certification number 07136031 is defined as the following:
ITEM INFORMATION
Year: 1991
Brand: ENOR
Player: AUTO JOHNNY UNITAS
Variety: PSA/DNA CERTIFIED
Grade: 7
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Comments
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Looking for Al Hrabosky and any OPC Dave Campbells (the ESPN guy)