Matty beat me to it but still trying to go for the Mantle base run. Found this 57 Topps on eBay and it was perfect for me. I am not focusing on grades or registry, just solid eye appeal. The color and centering on this one blew me away, enough so that I could overlook the creases.
After adding the 51 Bowman, my set is on a tight budget so this was as a great bargain add.