IIRC, you want this on an old A.C. blade - which is hidden tang. It would be more economical to put ivory slabs on a full tang, but I always do what the boss says....
RH04 HIPPOPOTAMUS TUSKS - "UPPER CURVED"
(E) 1 1/2" diam x 9 1/2" long. Polished for scrimshaw ($53 plus $5 for polishing).-$58.
(F) 1 3/4" diam x 9 1/2" long-$63.
(G) 1 1/2" diam x 11" long-$65.
Avoid Mammoth Ivory for hidden tangs. It'll crack easily and we'll both be upset about it.
If I had my pick of the litter, it would be one of these - which would be incredible as a khuk handle:
Narwhal Ivory
Something a little more practical would be:
RUSSC - STELLER'S SEA COW RIB BONE
You could also put one of these copal amber beads behind the rings in the handle - wow!
Walrus White Ivory:
I would also consider a jaw bone.
Anyway, plenty to look at there!