[Gustav]

This is a very interesting topic, I have thought about it for a longer time.

At first, about the drawings from Haryoguritno's book - they seem to make the differences between Greneng by different Empu so clear - but he himself seems to have said, to be unable to distinguish the work of one empu from another. So even these quite analytical dravings are merely attributions?

The second point - the only Empu whose output has been photographically recorded and is attributable with some bigger certainty is Karyo di Kromo. If we look at the pictures in Groneman's articles, his Greneng is of course always similar, but there are noticeable differences between Greneng on different blades. Why? There are at least two possible explanations.

As we all know, photographing Keris (and particularly Greneng) is not easy at all. The slightest angle makes it appear different.

And of course, compared to Jayasukadgo, Karyo di Kromo was a lesser Empu.

Or perhaps is there a possibility that the Greneng wasn't 100% identical on all blades made by an Empu during the span of his lifetime?

Attached a picture of Greneng of the same blade I posted earlier. There is a residue of oil/dirt in the Dha of Ron Dha nunut, so it appears to be smaller in picture.

Then there is another discrepancy to the rules - the elements of Greneng nevertheless appear to become bigger towards Kanyut Buntu.

And also a picture of Tombak attributed to Jayasukadgo, posted by Alan a while ago.