Can't offer much:

The usual:
-- Saint-Étienne guild gun;
-- 18.4 = 12 gauge.
-- 65 = 65 cm (2 1/2 inch chambers - "normal for France after about 1925).
-- Single proof

Poids (weight) (with "pression") 1 kg. This is the pressure it was proofed at. I don't know when this started in Saint Etienne but surely in the 1920's... You will recall Buckstix's "Cape Gun" or "Combination Gun" in the below line that we dated to 1930-31 had Pression 1100 Kilos (double proof by Manufrance).
https://www.doublegunshop.com/forums/ubbthreads.php?ubb=showflat&Number=587568&page=1

Barrels likely are J. Meunier - address in Saint Etienne in 1951 listed as:
Meunier, 7 rue Jean-Baptiste David ;

Standard barrels on a French Saint-Étienne gun are 27 1/2". This is 27" - if cut..it's a bit.

Perhaps the logo is his - I'll file it away and at some point might confirm it:
[Linked Image from jpgbox.com]

The Serial number is 567 - whoever made it didn't make a lot.

There is no retailer listed around the trigger guard...so not a high quality gun I don't think.
[Linked Image from jpgbox.com]

Acier mandrine - is just an advertisement. Really means nothing.

It has the inverted screw Verney Carron key.....now for convenience called "Helice" though that term is a false one.

I'd date if for no particular reason either late 1930's - just before WWII - of just after late 1940's. - possibly WWII trophy?

Some of the other marks are strange, Will research them over the next couple of days.

Last edited by Argo44; 01/13/21 10:25 PM.
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