unknown knife or dagger

[Gore]

Hello, I'm new on the forum and I didn't know where to put my question or how to attach my pictures.
I had this knife for a long time, but never know what was his origin. If anyone could help me identify the knife and his origin.

 

[BladeScout]

Looks homemade or theatermade maybe from an already existing knife or bayonet on account of the serial number.