Maybe discuss this critical card? Lemme start with an uncut sheet of the boxing-wrestling set:
Clay is the corner card. Lower right. Yet another reason why high technical grades are difficult.
Everyone always asks when the card was first issued. Odds are we will never know. The company stopped printing illustrated catalogs after 1961. The best we can do is look at order forms after that. Which is where it gets to be fun. Here is a 1969 order form that has the Prizefighters:
Which brings us to card stocks. I will comment on those later.