A banknote issued by Bank of China (BOC) in 1941 is seen at an exhibition preview displaying antique banknotes owned by BOC in Hong Kong, south China, on Oct. 31, 2012.

A visitor attends an exhibition preview displaying antique banknotes collected by BOC in Hong Kong, south China, on Oct. 31, 2012.

A panel of uncut HKD banknots issued by Bank of China (BOC) to celebrate its 100th anniversary in 2012 is seen at an exhibition preview displaying antique banknotes owned by BOC in Hong Kong, south China, on Oct. 31, 2012.

Editor: Shi Liwei