Wayne, just a stickler point, pamor Prambanan was really introduced at the beginning of the 1800s.
I'm not sure about nickle/iron nodules from Jawa volcanos, but it was always my understanding that much of the nickleous pamor used in Jawa was imported from other islands, like pamor luwu.
Oh, and Wayne, if your wife is really gonna make you stop collecting, don't forget what i said about that nice Bali keris of yours.
