Common Omani Khanjar with four silver rings and an antique wooden hilt inlaid with silver or lead. The hilt is very old.
Khanjar with similar wooden hilt
Arab name: khanjar
Origin: Oman Zanzibar
Oman and its Renaissance by Sir Donald Hawley Stacey International London 1987 page 134 / 135
Below you find a UAE You-tube film with a similar more modern Omani khanjar with the woven silver decoration: