I have programs for Topps Banquets from 1959 to 1966. They are pretty nice items. I hear there was a program for 67 but I have not seen it. The only program involving cards in that period was 1964. I think the banquets continued after that but Dave Hornish says they involve cheaper paper ones. I have not seen one of those, Beginning in the the 80s through recently Topps again put out programs for the Banquets, very colorful with pictures. I think I have most of them ( missing a couple).
I had read the SCD description of the 73s and agree with you it was not likely a test issue. If for a Banquet it was sure poorly done. I have wondered if maybe it was some kind of a gag production given all the errors, but considering the likely cost, that seems a stretch as well. Here are some examples of the earlier Banquet favors/programs
