Watch List notes:

(x) Central Bank of Oman, specimen 20 rials, 1987, serial number B/1 000000, pale blue, pink-brown and multicoloured, Sultan Qaboos at right, arms top centre, reverse, dark grey-green, building at left centre, (Pick 29as, TBB B2 as), mounting traces on reverse, red SPECIMEN overprint, in PCGS holder number 64 VERY CHOICE NEW, scarce.

Estimate: £500 - £600