1 Rial FAO

This piece was struck as part of the United Nations Food and Agriculture Organization coin program, a global initiative launched in 1968 that recruited national mints to produce commemorative coinage promoting agricultural development and food security. Oman's participation reflected the Qaboos-era push to align the sultanate with international institutions following the 1970 coup that ended his father Said bin Taimur's isolationist rule.

The .500 silver fineness was a deliberate cost-reduction choice common to FAO issues intended for limited circulation rather than bullion appeal.