Sjors, from the photos i would definitel say that it is a keris i would gladly add to my collection.
Is it more than ordinary? That is a rather difficult and subjective question IMO. I think it might be going too far to say that it is "extraordinary". To me it just looks like a good keris. It is well executed with a good and interesting pamor. But only you would know if there is "something special in your house."
