Watch List notes:

Singapore

Board of Commissioners of Currency, Singapore, specimen $1, ND (1989), serial number S000156, blue and multicoloured, black-naped tern at left, arms at right, Hon Sui Sen signature, red seal, red SPECIMEN overprint and three cancellation holes, in PMG holder 65 EPQ, gem uncirculated
TBB BNP 4, Pick CS4, KNB 22 S$300-S$400