Saudi Arabia Monetary Agency, specimen 5 riyals, ND (1983), zero serial numbers, purple and multicoloured, King Fahd at right, boats at left, signatures of Hamad Saud al-Sayyari and Muhammad Ali Aba Al-Khail, reverse purple, the Tanoura oil refinery, (Pick 22cs for type, BNB 121cs), a Giesecke and Devrient engraving, red Arabic overprint, unusually heavily engraved, uncirculated and very rare.
Estimate: £2200 - £3200