You were close on the others. I will go 12/15 and to make matters worse, it looks like there is some PVC and/or verdigris on the reverse. I am pretty sure I am right and if so it will not even grade.
OPPS, I submitted the wrong photos, it was supposed to be a 1932 I will put the right one on in a moment
Here is the right photo I am also going to lower my grade to VG20-25 BTW I only put a VG 8 on the 1917