Watch List notes:

Singapore

Board of Commissioners of Currency, Singapore, die proof for $5, ND (1966), no serial number or signature, black, arms at top right, printer's annotation '18/10/66' at low right, in PMG holder 64, choice uncirculated, very rare
TBB B102p, Pick 2pp2, KNB 2pp S$2,000-S$3,000