Based on changes made in print group 1 there is evidence that the PD150's were printed several different times through out the group 1 printing. There are also noticeable differences between some of the 150 and 350 group 1 printings that indicate there were changes made before they were printed with the 350 backs. I'm not sure if it has been established when the EPDG backs were printed for the group 1 subjects but this Frank Owen print defect might be evidence that they were printed before any of the other 350's.
There is a dark spot on his sleeve that I found on twelve different examples
9 are PD 150's one is a PD? and 2 out of 4 different EPDG's have this defect.
Owen%20Dark%20Spot%20On%20Sleeve.jpg
Owen%20Dark%20Spot%20On%20Sleeve%20Crop.jpg
Owen E EPDG.jpg
Owen H EPDG.jpg
I think this Owen was probably on a sheet that was printed during the last PD150
printing.
It's possible that there are 350 examples besides EPDG but I didn't find any.
Here's the breakdown.
approximately 345 total (around 10 were actually scans of Owen Wilson)
PD = 197
SC =118
Sov150 = 16
OM = 4
EPDG = 4
PD150 = 9 out of 132 plus 1 PD? with no back scan
EPDG = 2 - 4
PD350 = 0 - 24
SC 150/649 0 - 21
SC 150/25 0 - 9
SC 150/30 0 - 14
SC 350/30 0 -7
SC 350/25 0 - 3
Sov150 0 - 16
OM 0 - 4
I didn't go through and break down the backs that weren't listed or didn't
have scans but all of the examples that had the spot were PD 150's or EPDG
with the exception of one Piedmont that didn't have a back scan.
Owen I Unknown Back.jpg