Wow, thank your for all the information and diagrams! Now I will start the process of getting this back into serviceable condition. My dad will be thrilled.
I noticed a little bit of that crackle finish left on the handle, but everywhere else, it seems the finish is mostly gone. Were these guns blued or was that a painted finish?
Mechanically, everything seems to be in good working condition, just a couple missing screws and no rear sight.