5 Rials - Qaboos Sultan Qaboos

Issued under Sultan Qaboos bin Said, who came to power in 1970 after deposing his own father, Said bin Taimur, in a palace coup backed quietly by the British. The elder sultan had kept Oman in deliberate isolation — no schools, no hospitals, no paved roads — and Qaboos moved quickly to assert modernized statehood through institutions, including a proper central bank established in 1974.

KM#62 spans eleven years of issue, a long run for a high-denomination gold piece of this weight class. The .917 fineness places it in the traditional 22-karat category favored for bullion-adjacent state gifts and official presentation pieces across the Gulf.