When I found this one the edge was in pretty bad shape and needed quite a bit of time on the DMT to get an edge back to it, everything else was good and I only polished the blade with White Diamond. I spent most of my time shaping the horn for the scales.
All I know, and I could be wrong, is mid to late 1800's (based on hollow grind and longer tail) but before 1891 (after that they were required to include the country of manufacture). Nice job.