This is a First Day Cover that has been hand signed by the great, Jim Palmer & Omar Moreno. The cachet has been authenticated and slabbed by PSA/DNA. The serial number is verifiable online using PSA/DNA #84092232. The cover comes encapsulated in a tamper-proof cover. 100% authentic signature from Baltimore Orioles legend, Jim Palmer & Omar Moreno. A great gift idea for a Baltimore Orioles or MLB collector.