1980年中国铜镍“长城”壹圆,为较罕见之无砖纹版,NGC MS67,原光充沛,电蓝包浆,夺目美品 Peoples Republic of China, [NGC MS67] copper nickel 1 yuan, 1980, the SCARCER variety without brick details at the fortified towers, (KM-18), NGC MS67, cert. #6152996-028, most attractive cartwheeling lustre with electric blue toning surrounding the devices