I like what you have done with your pistol! I recently acquired one myself - not completely matching, but hey. Who cares. I was kicking around the idea of rebluing or not and finally figured since I don't plan on selling it, why not protect it. It's already got some pitting on the surface in various spots, so I'd like to stop any more degradation in its tracks. Your vids on this tipped the scales towards a reblue. Haha
Grip Luger thumb were it should, move 4 Fingers from grip to the top of toggle. Squeece back you see empty camber. Loaded indicator may be broken sometimes. Your gun Mauser and before WW2 WW1. Time guns had some small part’s straw look. Later blue . Also mag bottom wood. Backelite bottoms some 1941-42 aluminum Simson’ = Jew and past 1933 factory fell to Mauser