I'm not sure which thread this belongs in, so I'll just post it here on my first post.
I had two more folding knives packed away with the rest of my grandfather's stuff.
Since you showed me that these knives can be dated by their blade stamp, I did a little searching and found this:
Assuming this is correct, both are from 1946-1956.
Now comes the work of carefully restoring them. I'm going to start with the youngest one.