[BILL]

Hi Basil, I think it would be easier to note all the parts that aren't identified by the last two numbers of the serial on an Imperial Luger. Just about any part that is big enough for the numbers is stamped. I have seen all original with unmarked firing pins and rear toggle pins and other WWI pistols where these were stamped. The guide pin to the firing pin was not stamped nor the front toggle pin. Ok, that is all I can think of that you can easily remove ( I am sure one of my brothers here will straighten me out, though). As for the mismatched grip..often a grip is damaged and either a repro pair or an unmarked original pair will be installed on the pistol. Oh, some original grips and grip screws are not marked either. Arsenal refinishing, in my opinion, would be hard to tell from the original (unless it had a specific inspection stamp that indicated it had been back in for some repair). If you choose to replace any parts it would be nice to inform whoever you leave it to so they know that there are replacement parts. I hope this helps.