CHINA 1986 Historical Figures 22 Gram Silver Four Coin Proof Set NGC PF69 Ultra Cameo Sima Qian, Zu Chongzhi, Zhang Heng & Cai Lun. Condition: All Four Coins are graded PF69 UC by NGC. Pictures Show the exact item for sale. What you see is what you’ll get — guaranteed. 100% Genuine Guaranteed from an NGC & PMG Authorized Dealer. We are an NGC authorized dealer, PMG authorized dealer, and CCE certified member. Qian’s Coins — New England’s leading professional world coin dealer, specializing in rare coins, world coins and currency, NGC and PCGS certified coins, and bullion. Our professional associations include but are not limited to: NGC Authorized Dealer; PMG Authorized Dealer, ANA member, and CCE certified member. We pride ourselves on our reputation for expansive numismatic knowledge and fair dealing at all times. All items in our store are 100% genuine guaranteed. We also deal with bullion on a daily basis.