Zanzibar or Omani Jambiya?

[kahnjar1]

Hi Chris,
Nice Jambiya.
I have one similar (shown here) which comes from the Sharqiyah Region of eastern Oman around the port of Sur. The scabbard wire work is similar to yours but the hilt is a slightly different, though that is not unusual.
Can not be sure, but the hilt on yours COULD be rhino as it appears to show the typical "orange peel" end grain.
Some comments about your observations.....the plain rings are likely to be replacements as it is usual for all the rings to be faceted. As far as the nails are concerned they are likely to be for decoration, unless of course there is obvious sign of a repair to the hilt.
Stu