Hello Gustav,
Thanks for the pointers to Sumbawa. I will look further into it tomorrow.
The keris has a pamor, but it is barely visible in its current state (certainly not on the pictures i took).
I think your impression that gonjo and sorsoran are flattened are due to my poor photographic skills. I will try to make better pictures as soon as i get that hilt off
Meanwhile i tried the good old pencil method.
Best Regards,
Thilo