1986年中国杰出歷史人物系列第三组精铸银币5元一套4枚,包括「张衡」、「司马迁」、「蔡伦」及「祖冲之」,各重22克,总含银量80克(2.57安士),附原盒及证书,分别评NGC PF 69 Ultra Cameo,PF 69 Cameo,PF 69 Ultra Cameo及PF 69 Ultra Cameo,#3959938-014至017。People s Republic of China, set of 4x silver proof 5 Yuan, 1986, Historical Figures Series III, Zhang Heng , Sima Qian , Cai Lun and Zu Chong Zhi each weigh 22g, total ASW 80g (2.57oz), with original box and certificate of issue,graded NGC PF 69 Ultra Cameo, PF 69 Cameo, PF 69 Ultra Cameo and PF 69 Ultra Cameo respectively, #3959938-014 to 017 (1 box of 4 coins).