Does the hilt appear older than the sheath. If the kendit ring isn't painted on with marker (i've seen that done) than at least the hilt is from Bali since i don't think such hilts are being produced by the Madurese.
I must have missed this one on eBay. But Madurese or not, the bottom line is that it feels good to you.
It does still disturb me that sellers go to great lengths to misrepresent keris like this. It is a very fine example of just what it is
and i think if these sellers gave it a chance they would find that there is a market out there for these keris if they are as well made as this one.