Really like this last one Michael....and your gonjo iras blade as well (yours too Shahrial
). I will make the suggestion that if we keep adding new, yet unrelated keris to this thread we will move on to the next blade before we discuss the early questions at hand. Please feel free Michael to start new threads for new and unrelated acquisitions. I think it might give the discussion greater focus.
Back to the gonjo iras question and that keris. I have tried to asked the question of why make an gonjo iras blade before and the only answers i have received that seemed sustainable was that it was a cost cutting measure. This may be the case, but frankly it is an answer which has left me still questioning. I doubt that yours was made that way to protect the owner from the metaphysical powers of his own keris as you suggest on the website, but it does seem to me that there would be some other reason besides cost cutting.
As for your pamor descriptions, i have never heard pamor wengkon described that way. My understanding is that it is a protective pamor and will often be found on the keris of those who officiate over a group of people whose protection and care is in his hands. Of course, these pamor meanings can get pretty subjective at time and can mean different things to different people. I agree with you that the pamor is typical of Bugis blades, but i would say the dapur of this keris is far more Javanese influenced.
I am not all that good at recognizing ivories, but is there some reason this couldn't just be elephant ivory that has cracked with age. Why do you think it is molar material or possibly Hippo?