This is a First Day Cover that has been hand signed by the great, Rollie Fingers. The cachet has been authenticated and slabbed by PSA/DNA. The serial number is verifiable online using PSA/DNA #84092323. The cover comes encapsulated in a tamper-proof cover. 100% authentic signature from Milwaukee Brewers legend, Rollie Fingers. A great gift idea for a Milwaukee Brewers or MLB collector.