Trisula of unknown origin

[A. G. Maisey]

You could well be right about the other symbols Gustav, but I cannot see the detail in these photos well enough to be able to comment.

I've got that "Kraton Jogja" book somewhere, but I can't find it, so I cannot comment on that either.

The Gunungan is a frequently met with symbol, every keris can be read as a Gunungan, even though it is seldom obvious --- quite obvious in early styles, it becomes less so later keris.

There's actually quite a bit that we extract from this, a lot more than I care to write about here. I'm very pleased that you made this photo available.

Thank you.