1973年香港上海汇丰银行伍佰圆。BWC印製。高面值1973年设计,字首M-Q。PCGS GSG Gem Uncirculated 65 OPQ.HONG KONG. Hong Kong & Shanghai Banking Corporation. 500 Dollars, 1973. P-186a. PCGS GSG Gem Uncirculated 65 OPQ.(KNB85a) Printed by BWC. A gem high denomination from 1973 that falls within the prefix variety of M through Q.