1975年香港上海汇丰银行伍佰圆。左右两边序列号不同。PMG Choice About Uncirculated 58 EPQ.HONG KONG. Hong Kong & Shanghai Banking Corporation. 500 Dollars, 1975. P-186b. PMG Choice About Uncirculated 58 EPQ.(KNB75b) A mismatched serial number error found on this 1975 high denom.