Help Identifying Paper Type Of Pomeroy Local

I was trying to ID the paper types of the attached Pomeroy stamps and need some help....
When I acquired them I assumed these are the more common "thin bond paper". They are un-gummed and I see no wood fibers in the paper.
They are very transparent though, an indication of "thin pelure paper" if I read correctly.
I scanned front and back with white paper behind to highlight the transparency.
Am curious what the experts think.
Thanks in advance!
Harry

It is bond paper (it snaps while pelure is limp)

Thank you Richard!