I found a site that seems to explain the 1973 wrapper issue. Apparently when the final series (high numbers) was released in certain parts of the country, they also included cards from the earlier series--but only in the high series packs released late in the summer. It's clear that all 660 cards were not available in packs from the beginning of the season onward.
"The high series packs had a unique “All 660 cards” notation in a triangle that slightly overlapped the image of the catcher. This variation had 2 different panel offers and a production code of 0-451-90-01-3."
|