Geno,

This gun looks to be another belgian made boxlock (dimpled pins, pierced bottom plate, and generally lackluster metalto metal and wood to metal fit/engraving) many were imported to england in the white and proofed there. The whitworth tubes were available to the trade in europe and the USA. It has a very germanic look to it with the intercepting sears and side clips, as if patterned after a Sauer action. Hard to say who finished and flogged it.

Cheers,
Michael