Good day all, seems I a bit stuck on this pair of US No. 8a type IIIa these seem to be Relief D from the right pane of plate 4. Im having a hard time with either 31-32R4 or 71-72R4
The two charts I shared are Neinken's Figures 15-G and 15-H, showing the tops and bottoms of the six reliefs. On page 272, he explains that D relief was used in the fourth and eighth rows. He also distinguishes the true break in the upper frame line from ragged traces of color that can extend into it. That explains why a D-relief stamp can show some blue above POSTAGE even though the outer line is broken. Neinken, page 272.
I also checked the full position plates. Page 300, Figure 15A16 shows 31R4 and 32R4, and page 305, Figure 15A21 shows 71R4 and 72R4. Neinken illustrates all four as Type IIIa, Relief D. The strongest difference I can see on this pair is still on the left stamp. The top of the S in U.S. POSTAGE looks closer to 31R4. The 71R4
any and all help is much appreciated.




here is 71-72R4 only thing that matches is dot in forehead from the Do Porto images.
