Watch List notes:

(x) Singapore, Board of Commissioners of Currency, $500, ND (1977), serial number A/6 471372, green, Black-naped oriole bird at left, Singapore skyline at lower margin, arms at top right, reverse, oil refinery and ships at centre, female dancer at right,, (Pick 15a, TBB B116a), in PMG holder 65 EPQ gem uncirculated.

Estimate: £450 - £500