Raimey, the Fox was of 1905 vintage. I have had guns , or seen guns , with the Krupp Essen name. I have even seen guns with Krupp on the underside, but with lesser steels like names from Baker Gun and Forging catalogs stamped on the top of the breech. This all happened in the 1910-15 period when barrels were hard to come by from Europe. Apparently , if they had an order, they would deliver the gun with barrels, but not necessarily the steel advertised. In this case, better steel.

http://www.bakercollectors.com/