Thanks for the replies.
I went and looked at this gun again and took notes. I wish I had taken a picture of the barrel flats --this is a strange situation.
First, the action is serial numbered 203506 and the same number appears on the forend. However this number does not appear any where on the barrels or barrel flats.
The barrels do have the self-opening device (long rectangular boxlike). and everything is matched and fitted very nicely to the action. The barrels are a off-face. The swivel sling on the barrels is held on by two screws and can be removed.
The rib is marked "ACIER UNIVERSAL" "Manufacture Liegeoise D'Armes A Feu Liege Fondee 1866 Grand Prix Paris 1900." They also have the words "Cook Erill" with the symbol of a crown and the letters "ML" underneath.
Underneath is a circle with the letters "E, L, G" in a triangular pattern. The "Cook Erill" stamps are present. The barrel flats also have the following number P1K633.3. One of the barrels is stamped with the number 190506. The barrels are 2 3/4 and choked .015 and .030.
My suspicion was that this was a continental that had been re-barreled and then brought back to the U.S. after the second world war. The guy working behind the counter (an acquaintance that I shoot with occasionally) said that is the story he received from the seller (it is on consignment). Apparently, I lot of people have looked at this gun and the shop has tried to do some research to no avail including a few phone calls to Doug Tate. Hence the price of $1,000. A couple of screw are buggered, but not too bad.
The engraving and the trigger look very similar to this gun only in not as pristine condition: