Welcome to the site.
It would sure be nice if you could get clearer pictures of the proof marks. As far as I can see it has St. Etienne single proofs of 14,223 psi. Still I'd like to see better pictures of the marks at the end of the barrel flats. There'll be others chipping in with more information.
Steve
BTW the barrel lengths are metric.


Approach life like you do a yellow light - RUN IT! (Gail T.)