Yes, my first Luger was an all matching byf 41 with a large patch of bluing missing from the upper receiver and toggle areas... I bought it from the vet who brought it home. The blueing was missing because the soldier who he acquired it from had died with blood running down his arm, over his hand and across the top of this Luger. I paid him $100 cash for the pistol, a Schmeisser police magazine, and wooden bottom mag with a chipped bottom, and a 1941 holster and tool. I immediately sent it off to be blued to make it "pretty". I eventually regretted that, but what is done is done.
...30+ years later I traded the entire rig (less the Schmeisser Mag) even to a forum member for a like new Springfield Armory M1A, with a ton of accessories. A gun I had always wanted but never could afford... I took basic training in the Army with M-14 in 1967.
Here is what my first Luger looked like after I had it refinished... it was a TACK DRIVER!