I'm surprised, because the auction that I and Mike Fleming referenced appeared to me, anyway, to be correct for 1953. That appears to be what was on my 53 Manhattan, and I always thought they were correct. Full disk, with the black K. The embossed but not painted ones I have seen on 51K (and therefore, 52 Virginians, but I haven't seen one in the flesh) The painted different style K caps, not wheel disks, I am familiar with too, on my 49.