Saudi Arabian 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 22 for type, TBB B121cs), a Giesecke and Devrient engraving, red Arabic overprint, uncirculated and very rare.
Estimate: £2,000 - £2,200