I own 2 of these, bought around 20 years ago for some $20 bucks each. I seem to recall they are Austrian artillery short swords, can't remember where I got them. There were lots of these then (the same could be said for German lugers once too).
I tried to Google it up, but couldn't find it.
I wanted to try them for machetes ((at the price), but they are too thin for that.
Sorry my memory isn't better.