20 Ryals - Ghalib

Ghalib ibn Ali al-Hinai was the last Imam of Oman, deposed in 1959 when Sultan Said bin Taimur's forces — backed by British military support — retook the interior in what became known as the Jebel Akhdar War. This coin was struck in 1971 as a political statement from exile, asserting a legitimacy Ghalib had not held in over a decade.

Issues of this type are cataloged under the "X" prefix in Krause precisely because their governmental standing is contested — produced without sovereign territory, treasury, or circulation infrastructure. The 1391 AH date places it the same year Sultan Qaboos was consolidating the modern Sultanate after ousting his own father.