Watch List notes:

(x) Sultanate of Muscat and Oman, colour trial 10 rials saidi, ND (1970), serial number A/1 000000, blue-green on multicolour underprint, arms at right, value at centre and top left and right, reverse red, Mirani Fort at centre, small red SPECIMEN overprint and one cancellation hole, (Pick 6ct, TBB B106t), in PCGS holder 67PPQ SUPERB GEM NEW, scarce.

Estimate: £600 - £800