Your stamp with the blue 7-bar circular grid cancel on the cover with the matching blue AUG 12 TROY N-Y cds is NOT position 31R1i.
This stamp is badly cut in and is barely a "2-margin" example -- which makes plating very challenging as much of the areas of recutting are gone.
That said -- I am fairly confident that your stamp is position 14L1i -- but hard to be 100% certain given the completely missing top frame line, the significant cut-in at left which removed roughly 60% of the LFL (and along with it a good chunk of the upper left corner), and lastly, the missing piece of the RFL at its lower end.
Regarding your question about PlateAI -- it only works for Scott #'s 10, 10A, 11, 11A, 25, and 25A. It does not work for Scott #26 and 26A.
Hopefully these scans have come out better, ok the last page I posted. US No.10a orange brown position 76L2e relief A CDS from Harrisburg Pa Jan 20 (1852) blue stamp tied by matching faint circular 7 bar grid handstamp. and on this page with the Troy NY, post. I also posted a Buffalo NY pair 10a position 94-95R2e
thank you for taking a look at the Troy NY so 31R1i is no good. I wrote the wrong position, thats for a US No. 10, not 10a. and your positive 14L1i is it. I thought that position was for US No.10, not 10a I ask, because my 2nd choice was (19L1i) being this stamp is a 10a thank you. let me know your thoughts on the other two. thank you so very much.
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