"Bawar" hilts from Aceh

[Gustav]

Dear All

in Tammens "de Kris III" there is a picture (Nr. 173) of a planar hilt. In the description (page 205) he writes:

"Very old wooden copy of the silver "Bawar" hilts, which were donated centuries ago by the Sultan of Aceh to the Kampong leaders in the Gayo and Alas countries."

In the recent thread about Sajens sheath I posted an old picture (between 1890-1920), where two keris from Aceh with very similar hilts are depicted. The surface looks like worked with a white metal.

Is somebody able to confirm Tammens' information or add something?

Has somebody an example of such hilt? My only sources are Tammens and this picture, and when I saw it for the first time I was really perplex.