China 20 yuan x 4 Set Hong Kong City Return Architecture proof silver coins 1998 admin October 12, 2024 architecture, china, city, coins, hong, kong, proof, return, silver, yuan [CN329] China 20 yuan x 4 Set Hong Kong City Return Architecture proof silver coins 1998. Face Value: 20 yuan. Weight (g): 62.2. Gross weight (g): 870.0. Diameter/Dimensions (mm): 0.0. china