I have a early PROMO card which is little different from others, it opens like a book 4 pages, centre has 2 cards of M.J. and A. Hardaway and information and ratios, back page the checklist.
I would like to find what it could be worth and if there is any interested in it, photos below.
I collect rugby league now.
Not much. Had one in the past. The good thing was the 'promos' had no indications that they were promos so could be ripped and were like the cards out of packs. Back then those were worth more than promos.
So maybe there are not many of the 'promo packs' still around as they may have been ripped off to sell as individual cards. I know back then, promo cards generally weren't really worth much.