Ok gang- I have embarked on a very (!) amateur sleuthing quest for the
sheet question on 55 Topps. On ebay, I found a severely miscut Warren
Spahn card #31 (first series). It was easily possible to see the stat line for
the "unknown" player on the back top of Spahn's card. There is no question
it's another Spahn...ebay seller is "sc-tarheelvintage" and ebay item
number is 174709094130. Also, my friend found a miscut 55 Topps Gil
Hodges where you can see the tip of a ballcap at the bottom of the whole
Hodges. The color and physical location of that additional cap are a match
for Gil's cap in the whole card, so it looks like it's another Hodges.
Given this result, it is reasonable to conclude that 55 Topps sheets were
single player sheets? Again, this is NOT my area of expertise by any stretch
of the imagination. In the case of my friend whose 55 Koufax miscut led to
this thread, the color visible for the partial card is the Koufax yellow. It
seems he got a Koufax and and more Koufax, on his purchase of the SGC 1
miscut
I'd enjoy reading more input. Thank you, Trent King