Ok, so here's a theory- Or just a crazy guess if you want to call it that.
T206s are being printed, a batch of fronts are done and backs are being printed. Polar bear on one press, Old mill on another. It gets late in the afternoon, and the guy running the Old mill press realizes he's going to run low on ink a bit before quitting time. So he asks the guy next to him who's runnning a dark blue if he'll have any extra. He will, and shortly before quitting the first guy adds that extra to his ink reservoir. Blue mixes with the black he's running, making some very dark blue backs, and transitioning to a color close to the blue but not quite, maybe just a bit darker.
The day ends, the presses are washed down removing the days ink, and the handful of sheets slips by QC if there is any because the colors are close until the last few sheets. They're cut and distributed, probably not even getting into the same carton.
-Most pressmen do their own QC in the time I was at the print shop I only did QC once. And that was on a program for an event where we had to look for perfect copies that would be presented to the dignitaries presenting papers. Try finding 50-75 flawless copies out of 5000 of anything.
Steve B
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