Double check the spelling. Mine is Janssen Sons & Co. It is a 12 Ga. Double barrel, fluid steel barrels, but marked "fine damascus finish". The pistol grip has a Lions Head carved in it. It is my understanding that they were European pioneers in mass production of guns using parts interchangability. They exported a lot of guns and it was my understanding that guns exported to English speaking countries had the maker's name in the English format. My grandfather told me he paid $13 for it and his father thought that was a high price to pay for a shotgun.