I'm new here and thought maybe one of you could help me identify the kind of paper my stamp was printed on.
This stamp is a little older than 100 years, good condition from 1991.
The stamp that i own reacts to moisture in the air by curling itself, more so the longer you leave it outside of its case.
There is also an imprint on the stamp that is visible all the way through the backside.
Any idea what kind of paper this was printed on? It's definitely not a common kind of paper.