Watch List notes:

(x) Central Bank of Oman, specimen colour trial 1/4 rial, ND (1977), serial number A/1 000000, blue and multicoloured, arms at right, reverse blue, Jalali Fort in Muscat at centre, (Pick 15s, TBB B203as), red Arabic overprint, in PMG holder 67 EPQ SUPERB GEM UNCIRCULATED. At the time of cataloguing this is the highest grade recorded on the register, rare thus.

Estimate: £400 - £500