Re: MAB Brevete Model D (made in france)
I think your questions have been pretty well answered. The chrome/nickel finish is not original. The Germans took over many of those pistols and the eagle/swastika is the German acceptance stamp. The number is that of the WaA (Waffenamt) inspector whose team accepted the pistol for German service.
The gun is a shooter, with little collector interest. The ammunition might be corrosive in which case it will rust the barrel unless the barrel is cleaned right after firing.
Up until the mid-1930's almost all ammunition, including .32 ACP, was corrosive primed; after that, SOME commercial ammo was non-corrosive but almost all military ammo still used corrosive primers. Unless a box specifically says "non-corrosive", "sinoxid" or "nicorro" any ammuntion made prior to the 1950s should be considered possibly corrosive. (Even some late ammo, like 5.45x39 Russian, and some .303 British may be corrosive.)