Looks like Greybear has the gun. If so...analysis:
-- Ronchard-Cizeron is a well known St. Etienne barrel maker - running bunny is the trademark.
-- Gun is chambered in cm (6.5) vice mm (65) which was in effect only in St. Etienne from 1889 to 1912.
-- Proofed for PS powder - i.e. post 1900.
-- Canon de Surete and Guarante mean nothing but advertisement
-- Double Epreuve - is double proof, - see the double St. Etienne proof marks, at the time an indication of quality,
-- it was retailed by Guinard Art in Compeigne, NE of Paris. He must have been a well known retailer..there are guns on French sites sold by him:
https://www.auction.fr/_fr/lot/tres-beau...mpiegne-307235. There is a well known auto-parts maker in Compeigne named Guinard....it was taken over by the Germans and featured in the French WWII resistance. Retailers of guns in France were hardware stores that sold, scooters, bicycles, motorcycles, cars...etc.
-- "Raymond" on the lower rib could be the gun maker.
-- Chambered fo 16.8 (16 bore)
-- 393 is the serial number - but won't mean much.
-- Médaille d'or - gold medal I think won at the 1900 Paris exposition. will check on this.
-- Choke bored - It's choked but doesn't tell how much - French guns usually had a lot of choke
-- "Perfectionee". - means nothing but and advertisement.
-- there is a "L(?) Murat" stamp....Not sure what that would mean. Will research.
