You are correct, it is a composed keris. Also when the fit inside the sheath seems good there is to much free space, special in the back. Hilt and sheath are East Jawa/Madura and the very nice blade is Bugis IMHO.
Regards,
Detlef
I am not sure that the naga figure is original, it looks odd as well as the front side of the ganja which is too short?
Regards