Relic of a Javanese kriss whith original warangka

[Athanase]

Hello,

Here is a kriss I like a lot despite the ghostly state of his blade.
Lengh blade : 34cm Dapur : Cerita?
I had seen an instructive explanation of this type of warangka in Mr. Maisey's Catalog No. 74 (?). Unfortunately I made the mistake of not copying the text and I can't find this page.
The brass pendok seems to have been added later on the scabbard with a big bunch of glue, it seems to replace an old pendok or hide a wood too damaged.
The blade has a pamor but it is not determinable because covered with a layer of black wax.
The brass mendak is so damaged that it has almost disappeared.
The pretty bone handle lets guess a character under the tracery.

Any information on this type of sheath and handle is welcome.