Agree with Rocketman. From the proofmarks described, the only thing German about the gun is the importer or dealer who marketed it. Does not sound at all like JABC. The Belgians made a lot of nice guns for export, with the importer/dealer on the other end putting his name on the gun. I just sold a 16ga marked "C. Mode a Paris"--and that was the only thing French about the gun. Very nice quality BLNE, but all the proofmarks were Belgian.