It's Jeff if I am not mistaken. The scans can been seen in my blog as I was corresponding for a while with Jeff. It's an amazing hoard of these.
http://toppsarchives.blogspot.com/se...%20Punchboards
I had assumed the instructions were on the back, interesting that they were a separate item. I suspect these hit a final phase of controlled testing and were halted just prior to a retail test when the kids who got to sample them reacted poorly to the design of the game. They ultimately ended up being made over into what was produced in '67.
I am not sure all of the intended checklist exists (28 are known by my count) but it should number at least 36 subjects, 2 per position per league as I figure it, with 40/20 a possibility. Like the '68 Plaks, some may not have been produced for the test.