@David
Quite possible that it is indeed from Sumbawa, the real story behind this keris is most likely lost in time.
The keris is currently enjoying an extended bath in pineapple juice. I guess one or two more days and it will be clean. I will certainly post pictures when its ready
@Alan
Thank you. That is indeed an interesting bit of information. I was aware that keris are frequently modified to increase market value and that damaged keris are repaired. But otherwise i thought that except cleaning and restaining the keris had to be left untouched.
Best Regards,
Thilo