1996年中国古代发明系列第五组，「马具」、「船舵」、「天文钟」、「索桥」及「乐器」，第二枚评PCGS PR69DCAM，其馀评PR68DCAM，连原盒及证书，编号0000167 (1枚), 0000168 (1枚) and 0000169 (3枚)，计划各发行1200枚，实际各发行404枚. Peoples Republic of China, Chinese Ancient Inventions and Discovery, 5th series, 1996, 5x gold proof 50 Yuan, Harness, Ships Rudder, Astronomical Clock, Suspension Bridge and Instruments, each weigh 1/2oz containing .999 gold,the second graded PCGS PR69DCAM, the rest PR68DCAM, with original packaging and certificates of issue, certificate numbers 0000167 (1), 0000168 (1) and 0000169 (3), planned mintage of 1200 pieces each and an acutal mintage of only 404 pieces each (5 coins)
