fess:

Pics would be most beneficial, especially of the underside of the tubes near the barrel flats and the barrel flats. Krupp Lauf Stahl, or some variant, is Krupp steel tubes, a German steel maker. The triggerbow is imported buffalo horn. Chambers are more than likely 65mm/67mm(2 1/2") and probably black powder proofed.

I'm sure I've posted this before but here it is again:
Eduard Kettner, Köln(Cologne) & Suhl

In 1884 Franz Otto Julius Kettner, son of Eduard Kettner(1811-1888) founded Eduard Kettner of Köln and a satellite facility in Suhl. Franz Kettner(1808-1873) was a brother to Eduard and had a son named Franz Kettner(1840-1913) and a grandson named Franz Kettner(1875-1963) who along with a greatgrandson named Eduard Franz Kettner(1908-2006) were all master gunsmiths. Apparently 1st cousins Franz Kettner(1840-1913) and Franz Otto Julius Kettner were in business together under Eduard Kettner and probably in the 1890s Franz left. The word on the street is that Eduard Kettner/Franz Otto Julius Kettner leaned heavily toward the firearms merchant side while the mastergunsmith line of Franz Kettner may have made almost every item in their own shops.


Kind Regards,

Raimey
rse