1985年汇丰银行$50,幸运号AA222222,PMG 67EPQ,首个AA字冠,特别号码藏家不可错过的一枚。The HongKong and Shanghai Banking Corporation, $50, 1.1.1985, a superb solid serial number AA222222, purple, coat of arms at left, hexagonal watermark area at right, reverse purple, HSBC building and lions at centre,(Pick 193a), PMG 67EPQ Superb Gem Uncirculated. A true first AA prefix and a must for the special number connoiseur