2011 2x 1 /4 oz gold 4x 1 oz silver Peking Opera Masks 1, 2 Sets COA and box j4. This is the first and second set of Peking Opera masks issued in 2010. Each set contains one 1/4 ounce gold coin and two 1 ounce silver coins, totaling 2×1/4=1/2 ounce gold coins and 4×1=4 ounce silver coins. Peking Opera masks are the quintessence of China. This coin is colored and very exquisite. Mintage gold 30000; silver 50000 only. Return: sorry no return.