For your consideration is this complete set of rare vintage China Year 1980 great wall coin consisting of 1 Yuan (100 cents), 5 Jiao (50 cents), 2 Jiao (20 cents) and 1 Jiao (10 cents). This type series was in issue only for 7 years and pulled out of circulation long time ago due to the expensive material used (there have been 3 news editions of subsequent types since then), they are increasingly hard to come by! Their authenticity is guaranteed! It also details how to detect counterfeit coins. An indispensable reference book for collectors.