I figured as much!
Just having a hard time explaining to myself why this looks like a different paper aside from its 100 years old and used (I have old beat granite paper that you can tell)
If all the "fibers?" Where on the surface I'd say it was dirty and give it a bath
But some appear in the stamp?
I've been trying with a loop and iPhone to get a few better photos
Just looking for suggestions on a good explanation
It's old and beat don't sound like a thought out explanation for what I'm seeing(I'm sure you've gone threw this a million times, but I haven't so please if you can help a brother out just trying to learn
(These are the 15c but both have similar stuff?