Not all, but my best guess is that 90% are cancelled/stamped...
I am not a collector.. I have these, and am also going to list a large group of older stamps and also several small groups. While researching the older stamps I keep seeing that word "hinged".. What does that mean ??
Hinges are attached at the back of the stamp on then it is stuck into a stamp album. You will see on the back of the stamp whether it has a hinge, part of a hinge or a mark where there was a hinge,
Without going through and looking at each one, just a random look at the backs, I see a couple of hinged, but only a couple. Guess it would be safe to guess that almost all are not hinged.