I have a 1916 gun my grandfather brought back from WWII. all the numbers match. I had to replace the grips though. THe originals were split and rotten, so he had replaced them with some plastic 1950's era replacements. Servicable, but ugly. So it's wearing nice walnut checkered grips again. I also had to replace the trigger return spring, original was long missing. Also, I replaced the main spring. The one that was in it was a field replacement, borrowed from a P38 I think.
The gun is worn, it was in TWO world wars after all. I don't have a proper magazine for it, just the one WWII issue that was in it when grandpa captured it. I've put a few rounds through it after my repairs. I don't shoot it much because the mag falls out alot, being the wrong one. Plus, it's worth a bit, being a numbers matching, 1916, pretty good condition gun. But, it's priceless to me, since it's my grandfather's War Trophy.
I've thought about picking up a 'shooter' but...eh.