Hello,
The construction is similar to that of Nepalese hasiya sickles:
http://vikingsword.com/vb/showthread.php?t=603
http://vikingsword.com/vb/showthread.php?t=11243 (original pics no longer available but IIRC the piece was quite similar to yours)
Very odd cutouts in the blade though. An unnecessary waste of material I think. This could be a more modern embellishment...
Regards,
Emanuel