BANGKINANG & BAHARI kerises?

[VVV]

Originally Posted by Amuk Murugul

...the Bangkinang was developed in answer to the Portuguese rapier, mainly for use on horse-back (read 'pony-back')...Last of all, the bedor/tang had a flat section to prevent rotation.

I have heard this claimed before, but developed for the navy.
Do you have any source for this claim as I would like to know more about it?

I have never seen any panjang/penyalang with flat tang but that's maybe because I haven't examined any Javanese???

Michael