There is a Mayo Cut Plug John Dunlop on kind of an obscure-ish auction site here:
http://sportscardlink.com/auctions/i...541&id=1106541
It's extremely rare and considered the "Honus" of football cards - its still priced pretty reasonably all things considered. I'm actually considering bidding on it but I wanted to hear others thoughts on the true value of the card. Any thoughts?