Id Unknow 2

Here’s another one,
Neck dia: 9.63mm -.379"
Base dia: 9.70mm - .382"
Rim dia: 11.42mm - .450"
Case L: 19.62mm - .772"
Shortened 9mm Mauser M1878?


I also agree that a cut-down 9 mm Mauser-Revolver case is the most probable identification.

Thanks Fede.

Pascal.