I took her apart this week and administered a through degumming, and de-rusting to the mechanism. I even got everything back together and functioning properly. It’s amazing how some of the springs and pins look like brand new after removing over 80 years worth of **** from them. It’s supposed to have been made in around 1918.

I'm a little hesitant to shoot it though after discovering "4F 45" electric penciled on the side of the cylinder.

How do you determine if a piece like this is safe to shoot?