I have a problem with ID. Help me please :-) I will appreciate every help.
It looks to be a 5.2x34mmR Kronprinz
I thought it could be Kronprinz, thanks for confirming !!
Rufus, it is not the Kronprinz but the 5.7x33R “Scheibenpistole”, that has wider dimensions. It is also different from the 5.7x33R Dreyse M. 90.
Vince & Fede
Using your suggestions I dug the net :-)
99.9% compliance in dimensions has: 5.5 Soemmerda Rimmed.
Differences may arise due to the oxidation of the case for years of lying in the ground.
Thank you for your help and ideas !! You are great :-)