Is this a whale's tooth?

[harrywagner]

Originally Posted by Jean

I would like to see the peksi hole (decaying/ pitting or not?) before giving a more definite opinion but would guess for either tanduk rusa (deer antller) or whale bone (not tooth). The origin of the piece is probably East Java and from the patina its age may be about 100 years indeed.
Regards

Hi Jean,
I am afraid you lost me at peksi hole! What is that?