Very unusual SE sword

[Maurice]

Originally Posted by Freddy

Nice piece.

Looks a bit like a cross between a Japanese katana and a mandau from Borneo. Especially the rattan knot looks as it comes from Borneo.

Beside the rattan knot, also the inlay in one side of the scabbard you can bring to Borneo (see pic).
Maybe this sword was left behind after a decapitated Japanese soldier in the war when the Japanese were in borneo? And later made it a toeristic piece by the malay people living in Borneo?
I'm curious about other opinions.