The remarkable weapon at #1 reveals I believe the sword hilt adopted on Omani Shamshiir swords. Ariel is quite correct that Baluchi peoples have been in the Oman Zanj regions for a long time.. Saiid the Great employed Baluchi mercenaries to remove the Portuguese from Fort Jesus in the early 1800s... They have been in these regions ever since and in Oman largely on the Baatina Coast . The Omani habit of recruiting Baluch soldiers into its Armed Forces is a tradition going bck to the time Oman owned Gwadur and that part of what is now Baluchistan (under the Pakistani Flag) which was sold back to Pakistan in about 1950. Oman still recruits there.
The Omani Shamshiir
probably made in Hyderabad has a hilt similar to the project weapon thus I believe that is the link to this extraordinary sword ...particularly the silver wired knot. Shown below; The Omani Shamshiir