I have just got the Zonneveld book.
He is very definite at mentioning sikins with blades that have gold-wire incrustations which, in this case, are called sikin panjang
meutatah.
So this variant his well established in sikin typology.
Further he quotes that the part of the blade where (or when ?) these inlays are done is called sampa.
... i am learning
Fernando