Malay keris in WW II service?

[David]

Hi Greybeard, and a belated welcome to the forum.
Can you upload some photos of this keris? It's had to make any useful comments based just on a description.
I would also be a bit skeptical about the story that the keris was used for executions. I would also question that it was made during the WWII era for AFAIK there was not much keris production going on during that period.