The 10P1E is the earliest printing of this stamp, shown below left. Shown below right is the 10P1E late printing, from later printings taking place between the late 1930s and the early 1940s.

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I also find two other late printings of the 1E. The stamp shown on the left has a distinctive chocolate color for the outer design. The stamp shown on the right is very similar in state of the plate and color to the 10PNOP, yet is printed on 1E paper, and with a distintive comb perforation.