2000年汇丰银行20元一对,趣味号NV777999及NV999777,均评PMP66EPQ, 重要年份;The HongKong and Shanghai Banking Corporation, a pair of $20, 1.1.2000, interesting repeated number NV777999 and NV999777, (Pick 201d), both graded PMG 66EPQ Gem Uncirculated, key date of the series (2).