Please help me identify this triangular blade dagger

I need help identifying this triangular blade dagger. It has the same type blade as a ww1 trench knife. The scabbard looks like it buttons on a uniform or had a leather strap. I've looked everywhere and I can't find it. I dont even know what country it came from. There is no markings at all. Thank you

 

at 1st glance , maybe a field made ww1 dagger......needs more research..

 

That's what I thought but I couldn't find it.

 

it may have been fashioned as a boot dagger with the button holding it in place..

 

I think it is a dagger made by cutting down a triangular bayonet. The handle and guard are very much hobby-made-looking, and the scabbard is oddly-shaped probably from modifying the bayonet’s scabbard.

 

https://www.antiquers.com/threads/i...s-triangular-blade-dagger.64655/#post-4291074

double post.....

 

not many daggers with frogs....
more of a bayonet thing...


but that stud would stop it from going down into a high boot..

 

Thank you for your help.