This is a great forum with many very knowledgeable people willing to help.
The lines do seem somewhat crooked, but it's hard for me to be sure without a hi resolution scan. The middle perfs and smudge of cancel ink bottom right make it harder to ID.
I am pretty sure the vertical pair is Type IV, Scott #26A. It would be nice to see a better image because I think they may be from the fifth and sixth rows with the bottom stamp showing a guide dot.
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