My father in law was given this shotgun from his uncle. On one side it says " Saint Etienne, Acier Special, Chamber 70" on the other side it says " Fusil Rapid Brevete S.G.D.G France Et Etranger, Made in France, Cal.12 Choke" We couldn't find any info online like how old it is or what its worth.
matitude - I have moved your post to the "Other Shotguns" forum where you should get the attention of the people who can help you.
matitude: Your Father in Law has a semi-automatic shotgun manufactured under the trade mark "Manufrance" by Manufacture Francaisse d Armes et Cycles de St. Etienne, St. Etienne, France.
This shotgun was imported into the US as the Harrington and Richardson Model 440 (Plain wood stock and barrel) and Model 442 (checkered stock and vent rib barrel). These shotguns were manufactured in the 1968-1973 time frame and yours appears to be a Canadian version of the H & R Model 442.
French is not even my 5th or 6th language but from what I can interpret from the markings, the gun is an Automatic(semi-automatic?) Shotgun (Fusil Rapid) Model Et Etranger(?), made under license (Brevete) from S.G.D.G. France (?).
The barrel is Manufrance St. Etienne Special Steel (Acier Special). The gun is chambered for 12 gauge, 70mm or 2 3/4" shells and is choked. Somewhere on the barrel will be an asterisk or 2, 3, or 4 asterisks which signify the choke constriction. One asterisk is full choke, 2 is improved modified, 3 is modified and 4 is improved cylinder.
Manufrance is a major supplier of shotgun barrels to many shotgun manufacturers in Europe. They have in the past, and may still supply Benelli and other French and Italian manufacturers with shotgun barrels.
Value of the H & R Model 442 would range from $100 to $300 in the US depending on mechanical condition and remaining original finish. I assume that prices in Canada would be comparable.