Watch List notes:

(x) Saudi Arabian Monetary Agency, specimen 10 riyals, 1379 (1968), zero serial numbers, blue-grey on multicolour underprint, the Holy Mosque in Mecca at right centre, signatures of Anwar Ali and Abdul Rahman, (Pick 13as, TBB B112as), PMG 58 Choice About Uncirculated (Rust), perforated, red SPECIMEN overprint, rare.

Estimate: £1,500 - £1,800