Also -- OPC produced hockey cards in a second (or later 3rd) series when Topps would conclude. If they only had one main printing press (Dave would know better than I would) and Hockey sold better than Baseball, then it would make sense to complete production on baseball and move to better selling hockey cards. I suspect by about 1970 they probably got a 2nd printing press as the sets got larger beginning in 1970.
Regards
Rich
__________________
Look for our show listings in the Net 54 Calendar section
|