French sxs

Has anyone ever heard of Pousset or Pousett. I ran across an old sxs hammer gun in ok shape with that name on the water table.
NO OTHER MARKINGS AT ALL. No markings on the barrels or the locks.
It is or was a very nice gun at one time. PG is bone and it has an under lever . Odd thing is that when you remove the barrels the forearm remaines attached to the receiver.
Any help will be appreciated.
Thanks