As an entirely separate aside, I've seen a few things that make me think some portion of T206 production was done on a 2 color press. Nothing I'd hold out as certain proof, but I think a strong case can be made for it.
I'm not sure when Topps would have switched to multi-color presses. Even on some of those it's possible to run sheets with only one color, usually during setup.
I feel very confident that 1982 Topps were done on 2 color presses. This card shows evidence of a massive adjustment to the registration over at least 4 revolutions on both black and magenta.
