1991年汇丰银行500元，幸运号BB333333，PMG 66EPQ，罕见相同字母双字轨幸运号，此系列字轨为AA至CB，相同字母双字轨仅得AA及BB，由此可见只有22枚相同字母双字轨传统幸运号，精彩的一枚。 The Hongkong and Shanghai Banking Corporation, $500, 1.1.1991, solid serial number BB333333, (Pick 195c), PMG 66EPQ Gem Uncirculated. A superb and very rare double prefix solid serial number. The prefix range for this type is from AA to CB and therefoer the only double prefixes possible are AA and BB. Therefore, only 22 traditional lucky serial numbers can be found with a double prefix. A fantastic offering
