Thank you Mick and Henk for you wisdom and input!!!!!!!!!!
I apologize for the poor quality pictures (not enough lighting). I will break out my lights and take better pictures... (busy schedule, but hopefully by this weekend).
I know in Bali, that black and white show the "struggle" or "balance" between good and evil. I have not seen many black sheaths before.
Maybe there is a balance with the silver around the black wood?
My question about the silver Bayu (secretly) is my wondering about the status of the original owner, with the rubies and sapphires (and agates around Bayu's base), it probably didn't belong to your average "Joe".... with the black and silver, what the spiritual background or meaning may be.
Thanks again for your insight, I am on a learning curve with Balinese Keris'.