First post but Third Luger

[Mason1]

Gentlemen,
While this is my first post I’ve been lurking and trying to learn for a while now.
I will try and post some pictures of my third luger in the hope that the more knowledgeable members can help with some issues.

First off has a 41 over the chamber which I assume is 1941 manufacture, a 42 on the toggle which assume stands for Mauser , the serial # is 6957 s(?), all interior # are marked 57.

Left side proofs are Straight winged eagle 655 twice then a straight winged eagle over a swastika, with a much smaller one on the barrel.

There are no strawed parts, nothing in the white, as far as I can tell there is no rust or pitting, a couple of dents (?) on the side plate. All edges seem to be sharp, the barrel “slugs” and “mikes” exactly the 8.81. The barrel appears unfired. The only detrimental issue is the pin that retains the toggle pivot is broken and does not retain the link. I have managed to obtain several original retaining pins.

I would very much appreciate your assistance in answering the following questions:

1. Is this gun refinished or is the finish original?

2. How do I replace the toggle pivot retaining pin, is it driven toward the toggle surface or does it go inward?

3. The grips are wood, is that correct for this pistol.

4. Is this a common variation, or one that needs to be put away and just admired?

Thank you all for any and all help.