I just finished comparing the information on a couple of boxes that I opened and it seems apparent that it's as much about where they were printed as it is when with some of the variations.
Both boxes were from a later printing and both were 15 count cellos.
With the variations that I outlined in red boxes if everything was printed in the same place some of the variations would had to have been corrected and then become incorrect a 2nd time which seems highly unlikely.
I would speculate that the glow back sheets were printed in a different place/area from the non glow back sheets.
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