Quote:
Originally Posted by CMGsBBCs
I also assume that the Glow and No-Glow backs were printed separately, whether at a different facility or just at a separate time with the "different" ink... but they were absolutely packaged together, whether in packs or factory sets. The one factory set I opened had both Glow & No-Glow backs (all cards from certain sheets were the same). There must have been some batch system with printing, then perhaps they were cut and/or packed at a different time/faclity and packed with the "other" sheets printed at a separate time/facility.
I think moving the variations to my "Bolds" binder will make the most sense... So much tedious fun ahead  switching these cards around... again...
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I'm now certain that they were printed seperately and I'm pretty sure it was at a different facility or at least a different location within the same facility.
I can tell with about 40% of the 792 cards if they're glow or no glow backs just by looking at the fronts based on consistent stray recurring print marks.
Here are a few examples and it doesn't matter if they came from an early or late box.
John Franco with a light green spot 24 glow backs all have it 15 no glow backs none have it
91 Topps John Franco glow flaw.jpg
Mike Stanton white dot by circle in topps logo 29 glow backs all have it 10 no glow backs none have it
91 Topps Mike Stanton glow no glow variations.jpg
Alvin Davis light blue slash in right blue border 28 glow backs all have it 14 no glow backs none have it
91 Topps Alvin Davis glow-no glow variation.jpg
also the the #374 Larry Casain that's listed as a variation isn't a true variation the blemishes were never airbrushed out all of the no glow backs have them and none of the glow backs have them.