Visayan Kukri?

[VVV]

Does any forumite recognise what kind of blade this is?
It looks like an oversized sickle but holding it in the reverse grip the balance is wrong.
If I however hold it in a hammer grip, like a Kukri, the balance is perfect.
The edge is on the inside and it's quite heavy.
To heavy IMO to be an agricultural tool.
The blade is 38 cm, almost 15".

Michael