Thats what I love about French guns, sellers typically don't have a clue as to what they have. "St. Etiene huh, it must be Spain!"
Lets see:
Acier Comprime = Compressed Steel
65 = 2.5"s chamber length
17.0 = .669" inside barrel diameter
Crown over PT = Standard smokeless powder proof
Mark to the left of St. Etiene = 14,223psi provisional proof

That's it for me, hope it helps.
Steve

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