I just had another thought about these photos. I now believe that U&U had Conlon photos that they then took a picture of, creating a copy negative. Then they could make as many copies as they want to distribute.
I came up with this because you can see a serial number in the U&U photos, when in fact the image on the Conlon negatives would be much larger.
So this would make these photos Type IV even though they are of the era? And this now makes me question a lot of the photos in my collection.
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