Hello Michael,
OMG, you get every time the most curious pieces!
When someone other will post this keris I will believe it is a composed piece but what I can see from the pictures it is all typical Batak work apart from the blade. How fit the blade inside the sheath? The blade have a strong balinese/lombok touch in my humble opinion but more slender than normal. I am very curious what others will say about this keris.
Regards,
Detlef