Hello Detlef,
In this case I don't think the marking will mean anything to the value, as it is an ethnographic weapon now.
It would be funny if it was marked "VINCE" because militairy Klewangs of that making are rare, but MILSCO and HEMBRUG are quite common.
There are also Klewangs around without any markings and although they are not very common, militairy collectors do not value them much.
Anyway, it is a timor sword now
