Quote:
Originally Posted by Zach Wheat
Interesting info. The 1991 Topps set probably has more variations and print defects than any other set. Compiling a complete master set would truly be an accomplishment.
It seems, based upon initial looking at this set the non-glow backs occurred first. After printing some of the Desert Shield set, which was thought to occur early in the print run, they added brighteners to the red ink. I actually have card(s) with brightener and no brightener on the same back.
Variations and print defects are seemingly unlimited
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I think the glow backs and the non glow backs were printed in two different places and I actually think the base set was printed in at least three different places.
There a number of variations that are only found on either a glow back or a non glow back and it doesn't matter if it's an early pack/box before any
corrections were made or a late pack/box after all of the corrections were made the variation is based on the glow or non glow back.
91 Topps glow-no glow variations.jpg