The blade length is 13.85 inches (35cm)
The peksi length is 3 inches (7.6cm)
Dimensionally, I've not seen any old Balinese keris that is this small. Most Balinese kerises are around 16 - 18 inches long. The sheath is East Javanese and not Balinese. The original hilt (not shown) was also East Javanese. Even the mendak (though a cheap one with glass beads) is not the typical Balinese or Central Javanese type.
Compare the sheath to the other Balinese kerises that have been posted in the forum, or in Kampungnet (for those with decent access speed.
). You can see that they are related, but very different.
http://www.kampungnet.com.sg/modules...view_photo.php
And then, compare the greneng style on this singa barong to a Balinese/Lombok keris. Again, there is significant stylistic differences.
http://www.kampungnet.com.sg/modules...view_photo.php
I am confident that this keris is not Balinese. My doubt lies only in the age of the piece, and whether it may have been modified.