[Helleri]

I think it's for chopping herbs or cutting leather (given the ends come to a point, it's more likely that it is for cutting leather, as herb choppers typically have rounded tips). Looks homemade.

[Edit: giving it a bit more thought those tips don't come to a very good point and it does have a T-section handle, which round knives (what the type of leather cutting knife I am thinking of is called) don't typically have. I mean they can but it's more common on herb choppers. So leaning more towards herb chopper now]