Hi Andy,
Welcome to the Forum .
Yes, your keris appears to be of Javanese origin .
I might suggest the Jogyakarta region judging from the style of hilt .
The outer metal sleeve is called a Pendok; and I believe the decoration on it is called the Semen motif .
The blade appears genuinely old .
I would suggest a bit of oil on the blade for now .
You may want to unmount the blade and give it a soak in Pineapple juice first to break up and remove the surface rust before oiling .
Repairs to these old scabbards are not that unusual to find; the newspaper was probably used to ensure a good fit for the pendok .
The wood grain looks beautiful .
Rick