16 ga. side by side

Please help me identify a 16 ga. side by side shotgun with 2 hammers and 2 triggers. There are some letters,numbers and symbols stamped on the bottom of the barrels. Some of the markings appear to be stamped backwards. Each piece is stamped with the same set of numbers except for the barrels which had a different set of numbers, even the screws were stamped with these numbers. Also there is tooling on the metal parts even the screw heads and the end of the barrel lock. There is not an identifyable make, model or serial number. Any info would be greatly appreciated.[This message has been edited by Dee Dee (edited 12-07-2001).]