The "maker's name" (at least, the packager or distributor's name) is either Bondin or even Boudin, as both are current names. Parts of this gun may have been made at Manufrance, but not the whole gun, as the "Bondin" name is not one of their trade names. Like previously stipulated, there was a "guild" there who used parts made by others to assemble shotguns.
I can say without great doubts this gun was made between 1900 and 1923 and was proofed with black powder at 14 223 PSI. There may also be somewhere a "Crown" over PT for smokeless powder - now visible on your new pictures, of course if it was intended to use with it (mandatory from 1900).
Also from you pictures, it should be in 12 Gauge 2 1/2" (18.2 / 6.5). If a folded 3.5' shell does not fully chamber, protruding about 1/2" out of the chamber then it's still a 2 1/2" chamber (If you try that, be smart and do not attempt to close the action and fire the ammo...). "Choke Rectifié" means "calibrated" choke, "Portée Garantie" means it"s a "long distance" gun, the chokes being 18.2mm (0.716").
I can't read the words in a arc, but usually it relates to the steel.
The "Acier de Surete" stamp is the equivalent to "Fluid Steel" which means it's not a damascene barrel.
St-Étienne area made good quality shotguns, much better than low end Belgium ones.
If the hinge is stiff and the action closes tightly, that would make a very nice usueable gun for flushing grouse hunting.
