Diameter of silver coins 40.00 mm. Silver Weight 31.22 Grams Each Coin. China 2008 beijing olympic set 6 gold silver coins series i children ngc pf68-70 2008 china s10y olympics hoop rolling pf69 ultra cameo. 2008 China S10Y Olympics Shuttlecock PF69 Ultra Cameo. Gold Weight 10.385 Grams Each Coin.