Okay...but now I have two follow up questions. Probably due to my ignorance on the process back then and when/how it changed.
First, I presumed a single cylinder rotation would print a single sheet, so the same spot on the next sheet (where the next sequential number would go) would end up getting the same plate number. Is that incorrect? These are 1935 silver certs, in case that matters in terms of process. I'll guess the answer is that they didn't print serial numbers like that back in 1935?
Second question, my seven sequential 1957 silver certs all have matching front and back plate numbers. If my above guess is correct, was the process changed between 1935 and 1957 to where sequential serial numbers were then printed in the matching position on the following sheet? That would make sense, and I should expect all sequential bills before a certain date to have different plate numbers and most sequential bills after that date to have the same plate number.
Or...I just have no idea how this works.
First, I presumed a single cylinder rotation would print a single sheet, so the same spot on the next sheet (where the next sequential number would go) would end up getting the same plate number. Is that incorrect? These are 1935 silver certs, in case that matters in terms of process. I'll guess the answer is that they didn't print serial numbers like that back in 1935?
Second question, my seven sequential 1957 silver certs all have matching front and back plate numbers. If my above guess is correct, was the process changed between 1935 and 1957 to where sequential serial numbers were then printed in the matching position on the following sheet? That would make sense, and I should expect all sequential bills before a certain date to have different plate numbers and most sequential bills after that date to have the same plate number.
Or...I just have no idea how this works.