I made this myself in the early 1960's when I was about 10 years old. I've still got scars from trying to shape the blade. It was stuck into the side of the barn and I jammed a thumb into the sharp edge when the file slipped.
The handle is from a 2 x 4 and the rivets are 20-penny common nails. The blade is from a chunk of flotsam picked up on the Oregon coast while beachcombing for agates. If I recall correctly the guard is a bit of radiator brass.
I saved up my grade school milk money to buy the sheath.
This is the first knife I remember getting. It is a Boker Tree Brand. Just disregard the holster.
Larry