Thanks for posting the photos, Al! The all yellow pack is a test pack (I believe) and should contain a white backed card. White appears to have come first, followed by the gray backs. I don't think that any packs were issued for the National set from 1980. I think that was simply distributed as sets to dealers. I have seen cases of the complete sets, where the sets are bundled together by a rubber band, but no packs or boxes. Odd, but Topps did lots of odd things.
kevin
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