Three very common types of "Mountain Man" knives.
All three here , while not from the "Rendezvous Period" ( circa 1825 - 1840ish )...
Are from the 1890's - 19teens.
All three get used today as hunting , camping and kitchen knives.
The bottom two are what are referred to as "Butchers" in Fur Trade ledgers and Journals.
The large one is a Russel "Green River".
The Middle knife is a Christopher & Johnson from Sheffield England...I won this knife at a rifle match and as it did not have a handle , I made one from cow horn.
The top knife is what was called a "Trade Knife" or at times a "Scalper" in period Journals and Ledgers.
It was made by "Universal"
The original wooden handle broke...so I made a handle from antler.