Is this s/42 Luger a Mauser commerical?
 

And is the Erfurt toggle an original reuse? There are no commercial proofs or waffennampts. Barrel is a Finnish Tikka replacement.

This looks like a standard Finish Army re issue.

They took parts from damaged guns and made them in to working guns again.

SA stamp on the side and a Finish barrel are attesting to that.

Yes it is a "finned mismatch" but what model gun did the s/42 1938 marked portion originate from.

Proof marks on the right side of the slide ?

It looks to me that a frame is actually a DWM , by the style of the numbers.

For the slide if there are no proof-marks on it, is probably forma commercial gun.

No proof on the slide! So its a:

Finn mismatch with

DWM frame Commerical?
1938 Commerical Mauser slide
Erfurt Military toggle part

NO,

DWM frame can be anything.
As 4 digits with suffix where made for army and for commercial sales ,
but this gun been Finland capture weapon, DWM army is the more likely option.

Slide is Mauser Commercial or arsenal replacement .
As some replacement parts did not have any numbers on them, just the small s/42 mark. I have seen meany barrels like that on army guns, never seen slide before.

Toggle is Erfurt army for sure.


May be someone with more info on Commercial mausers can pitch in ... ?

This is really a Mixed Parts Pistol! I wonder where it was put together.

Perhaps Kotka or Hamina.

...or Alexandria, Virginia.... :)