Double proof, which is good. Alex Martin was another maker that did the ribless sxs thing.

The French--unlike the Spanish, Germans, Italians, and Brits--never really made a concerted attempt to penetrate the US shotgun market. But from the French doubles I've seen, it's unusual to find one that's not well-made, even if very plain. Manufrance Robusts are the ones we see most often, and they were more or less the Stevens 311 of France in terms of numbers made--but much higher quality. And the "quirky" title definitely has to go to the French: Darne/Charlin, Manufrance Ideal, Petrik OU. They didn't all just copy each other, for sure.