Some unusual ones:  A Petrik OU (not in very good shape); Charlin sliding breech OU; and a stunning pair of Vouzelaud 20ga boxlocks (but with 3" of drop).  The Vouzelaud sidelock I used to own is also on there.  Turned out to be Belgian, but reproofed in France and, I think, entirely redone.  But Vouzelaud thought highly enough of it to put their name on it.  A lot of gun for the money. 
There is a nice piece once sold through well known Parisian gun peddler.  GI 100968925 nice mid-grade double proly made NE of France in Herstal, Belgium.