Please help me identify this broom handle

[Kyrie]

Originally Posted by kurusu

I can think of two reasons.

9x25 Mauser
9x23 Steyr (with the 'Austrian connection" in mind).

Bingo.

And purely FYI, no offense intended, it's actually 9x22.5 Steyr. That's the factor which prevents using the 9mm(x22.5) Steyr and the 9(x23) Largo/Bergmann cartridges interchangeably.

Another consideration is the original serial number on the barrel/barrel extension, and the serial number range in which it falls.

Alas, C96 collectors generally have to deal with more ambiguity than do Luger collectors.