Приобретен в Тегеране в 2018 г.
Литература и аналоги:
1. Anne van Custem. A World of Rings. Africa, Asia, America. / Anne van Custem – Milano: Scira Editore S.p.A. 2000 – p. 101.
2. Marjorie Ransom. Silver Treasures from the Land of Sheba. Regional Yemeni jewelry. - Cairo - New York: “The American University in Cairo press” 2014. - p. 166.