This looks like a gaucho knife to me, specifically a "cuchilla", a common utility knife of the gaucho. We have an article about such knives on our site and if you scroll down you will see similar examples.
http://www.vikingsword.com/ethsword/facon/criollo.html
The maker here is Broqua & Scholberg. I believe the company started in 1856 and was pretty much defunct by WWII, so that might give you a time frame.
