Hello Paul. Welcome to the forum.
I am afraid that i do not know exactly what you are seeking here. Can you be more specific?
You have used the word "keris", but also "Moro Sandung". I presume you mean "Sundang". Though you will find people that use the spelling K-E-R-I-S for the Moro Sundang, we tend to use that spelling on these forums only to describe Malay keris. When discussing their larger slashing cousins we tend to use the spelling K-R-I-S. If you are indeed inquiring about Moro kris (sundang) only i will transfer this thread over to the Ethnographic Forum as we only discuss the Malay/Indonesian variety on this forum.
