Gentlemen. I'm really not sure where this thread is going. None of the examples you have shown,Marco, present sheaths that have the keris in reverse position like your example is. That seems to be the really unusual aspect of your keris that we were all commenting on.
We have all seen Javanese hilts presented with the hilts reversed. Yes, even in published books. That does not necessarily mean that is the generally accepted position for such hilts. But yes, surely it happens.
So i am not sure what all these recent posts are trying to establish.
I respectfully suggest we move on to more fruitful topics.