Central Bank of Oman, specimen 1/2 Rial, 1987, serial number B/1 000000, red SPECIMEN overprint and De La Rue seals, one cancellation hole, specimen number 4, extremely faint evidence of mounting, annotations and date ‘29-2-88’ in top margin, in PMG holder 63, choice uncirculated, much rarer DLR specimen
BNB B213as, Pick 25as £700-£900