I have never witnessed any kerdas kemo hilt ever since my long pursuance of this form 10 yrs ago but your finding is sure something alarming. Do not confuse with kerdas bone hilts. It doesnt matter, old or newly made because owning kemo as hilt form is damn lucky. Nobody would want to do it for you, longer time taken and too complex doing it. I am a great collector of this hilt, presently owning 3 jawa demam kemos. I even tried to make one out my giant kemo but honestly speaking, it needs real patience and skill. Cutting is a problem, shaping is another. Hard but breakable. As far as I know, Kemo hilts existed as early as 1700s, nearby sea surrounding countries esp. Sulawesi, Patani,Trengganu. The only disadvantage is that it looks horrible without polishing it. How sure yours is kemo? Bone?
put up pictures.