What is unusual is the lock and I have never seen another like it. While the lock release functions in the same manner as Okapi knives and Spanish navajas, the lock itself is different. The blade has a ratchet on the end (like the Okapis and navajas) but the back spring doesn’t engage the ratchet via the expected rectangular cutout. Instead, the teeth on the back of the blade mate up with opposing teeth on the underside of the back spring. This arrangement allows the blade to lock solidly in four different positions before locking fully open (see pictures). The back spring is very stiff and it takes a bit of effort to open the blade to the first position. After that, it is fairly easy to open it to all the other positions but, once it is opened to the first position, it is impossible to close the the knife in any of the positions without using the lock release. The lock release, which is far more robust than those found on Okapis and navajas, completely lifts and disengages the back spring from the blade ratchet.
Specs: Blade about 4.125” ( about 10.5cm). Hilt about 5.125” (about 13cm). Bolster about 1.875” (about 4.8cm).
The hilt scales appear to be cow horn and are held with four rivets. Steel lock release, bolster, butt cap, liners, and rivets. There is fixed bail (steel) on the butt of the back spring and there is a steel ring through the bail.
Sincerely,
Rob
