63 Topps Mantle - Possible Print Variation? Unfinished Proof?

[steve B]

Originally Posted by Aquarian Sports Cards

Even though the colors aren't laid individually on modern cards if a less than observant pressman let the yellow ink run out it can happen.

Really modern stuff is probably on a multi color press, but I believe most cards up to 92 at least the colors were done individually. Even on a multi color press, they sort of are. I'm not aware of any litho presses that can do multiple colors from the same plate. (Intaglio yes, but those aren't used for cards, and maybe aren't even used for stamps anymore.)