Dear Erik,
I could not find the correct 'hulu' name earlier today.
But indeed uptill now I only saw ivory combined with hulu peusangang and hulu rumpung.
Never with hulu
tumpang as this piece suggest.
However, and that is why I already made the picture with the other blade,
this blade is very narrow and long compared to any other sikins I have seen.
It really fits the scabbard like a glove. (a bit of a broken glove

)
And therefore also my request here.
I am looking for sikins with Hulu tumpang and an ivory scabbard mouth ?
Anyone ?
Best regards,
Willem