Located in the Rockingham Works, 124 Rockingham Street, Sheffield, England. In addition to pocket knives, this firm produced a knife pistol from 1839-1884, with knife blades and a German Silver percussion barrel. It is about 25 caliber and the trigger flips out. A cased set has been seen, marked on the case “By Her Majesty’s Royal letters patent the Celebrated Pistol Knife, invented and manufactured by Unwin & Rogers.” They sold their trademark “NON-XLL” in 1884 to Joseph Allen & Sons, and went out of business. This company manufactured “Bowie” type knives, among other kinds of cutlery.
c 1838-1884