Please help me identifying this nice piece I found in my country, Argentina. Length total is 25 cm. Blade length is 15 cm. This is a three blade!

The owner would not say anything about its origin, but I like the objetc for my small collection.

Thanks in advance

Alberto

http://imageshack.us/photo/my-images/687/daga4.jpg/

If the pic doesnt show, please help me on how to do it!