All About Pocket Knives

I got a group of pocket knives at my local yard sale for 10.00. Two of these knives I was hoping to find more info on. This fixed blade knife is about 10 in from blade to bottom of the handle. No markings or names at all. The handle looks to be made of bone. Does anyone recognize it?

The jigging looks Japan.

Looks to have been made in Japan during the 1960`s.

I seen similar made by Pic, Precise International Co.