OMAN. Proof Set (7 Pieces), AH 1391 (1971). All NGC Certified. 1) 500 Rials. PROOF-63 UCAM. KM-Unlisted; Fr-1.2) 200 Rials. PROOF-65 UCAM. KM-Unlisted; Fr-2.3) 100 Rials. PROOF-64 UCAM. KM-Unlisted; Fr-3.4) 50 Rials. PROOF-65 UCAM. KM-Unlisted; Fr-4.5) 20 Rials. PROOF-64 UCAM. KM-Unlisted.6) 10 Rials. PROOF-64 UCAM. KM-Unlisted.7) 5 Rials. PROOF-64 UCAM. KM-Unlisted.An EXTREMELY RARE set, presumably produced in recognition of the 1970 coup détat that saw Qaboos bin Said ousting his father, Said bin Taimur. One of only two sets weve been able to locate, and the only one certified, making this an important opportunity for the collector of modern rarities. Sold with the original box of issue as well, which include the original COA.