唐朝顺天元宝背上月3枚,重量16.9-23.1g,华夏75-80,尚·皮尔·米歇尔中国钱币系列,Tang Dynasty, group of 3x Shun Tian Yuan Bao, struck by Shi Shi Ming during the An Lushan Rebellion, all three with the crescented moon at the upper quadrant, weighing 16.9 grams, 19.5 grams and 23.1 grams, Huaxia 78, 75 and 80 respectively (3)