WW2 Navy Lugers??

[Enigma]

Thanks a lot for answering my questions. I am not so well into WW1 Lugers and I guess all these are well marked. But the WW2 ones I find a bit puzzling. This might be rhetorical and I might be wrong but as I have learned it the ”N” nordsee and ”O” ostsee markings were given by Marinewaffenamt as items that were their responsibility were handed over from them to any ship that were requisitioning them to fulfil their inventory. They did this to keep track of what they had as serial numbers alone will be a nightmare in the end.

1.If I understand this right there are no special markings from Mauser that will be 100% waterproof evidence that it was made for the navy?

2.Are there any special serial sequences that are allocated for navy guns?

3.Markings were added by Marinewaffenamt and there is no sure way to know if the markings are not added by someone with the right tools later.

4. If the local Marinewaffenamt did not feel like engraving navy eagles they were handed out as is. (If they were not a part of a ships inventory).

Bård