Hello Robert,
I was watching this tomak, you get it for a very good price, congrats!
It seems that you got recently attracted to Indonesian blades.
I would follow Alans advice: "
I'd possibly give it a WD40 soak, followed by brushing with a stiff brush, plastic or bristle, then spend time under good light with magnification and a pick, I like a saddlers awl for this sort of thing. Little bits of steel wool on the end of a sate stick can clean smooth areas."
But I don't like antique tombaks dressed as "golok", it's a typical Indonesian fashion, I like them mounted on a custom stand but this is my pure own opinion, others will like them presented the other way.
Attached are a few examples dressed as "golok" taken from the net.
Best regards,
Detlef