1 Rial - Obverse: Arabic text. Sultan Qaboos bin Said (18 November 1940 – 10 January 2020) was the Sultan of Oman from 23 July 1970 until his death in 2020. A fifteenth-generation descendant of the founder of the House of Al Said. Coat of arms with crossed swords and khanjar (dagger) in center. Al Alam Palace in Muscat at lower center. Khanjar as registration device. Reverse: English text. Flowers, khanjar, desert white butterflies (Pontia glauconome). 45th National Day logoat lower center. Sultan Qaboos University in Al Khoudh in the Muscat Governorate at right. Two-tone windowed security thread.