Nanjing mints is the solely appointed official mints in printing RMB in China. They have achieved numerous technologies breakthrough. One of it is the patented nano-technology of 3D effect on thin notes. Another technology breakthrough is the first tri-metallic medals of the Chinese Traditional Culture series Dragon and Phoenix which has sold out within few months. Mintage is 299, 45 mm as following photo. This is the first tri-metalic medal in China. This tri-metalic medal does not use any industry glue in striking the medals which is common practise for the bi-metallic coins/medals. Nanjing mints has push their technology to maximum by developing new technique to strike the medal in tri-metallic without using any industry glue. In additional it is tri-metallic instead of bi-metallic. They are able to strike the 1 g silver (soft element of metal than brass and cooper) dragon ball (middle of the medal at dragon and phoenix side) to the brass and strike the brass and cooper on reverse and observe of the medal. The video also show you it is striking process instead of using industry glue. The person try to force break the dragon ball with strength BUT fail. [youtube]http://www.youtube.com/watch?v=NNNjI451K4o[/youtube] We demand them to make another challenging breakthrough of the version 1 dragon and phoenix by striking 2 new versions of tri-metallic medal as following photo:- Version 2 0.999 30 g Silver with design of "koi fish jump over dragon gate and transform into dragon as China Folk story" as photo below Brass dragon and phoenix at reverse sides with copper dragon ball as photo below. You will not appreciate and aware the technology breakthrough by viewing the medal photo. It need details explanation. Silver is soft element of metal which is very hard to strike and cast together with much stronger and hard metal like copper and brass. The first version of the tri-metalic is easy than the version 2 because it strike only 1 g silver soft medal into a massive hard surface and metal of brass. It is also strike both hard metals brass and cooper together. However, version 2 need to strike the massive surface of the soft metal of silver (koi fish side) with the massive hard metal surface of brass. Version 3 is more tricky and challenging. From the above photo you can clearly see the silver is nicely strike with brass by using no industry glue at all. VERSION 3 : 0.999 30 silver with design of dragon and phoenix with copper dragon ball as photo below:- Brass is used at the design of "koi fish jump over dragon gate and transform into dragon as China Folk story" as photo below Why version 3 harder to strike as comparing to version 1 & 2? It combine the version 1 & 2 technology and face another challenging of strike the hard element of cooper which is the dragon ball to the soft element of silver of the design of dragon and phoenix. The mintage of version 2 and 3 have a combine mintage of 199 in total which is 100 lower than the version one. The mint has made a lot test and trial medal in order to break through the technology and success in striking it. Numerous die have breakdown of minting the trial medal as show in the photo here. They have success and efficient in the technology now and ready for the minting. It likely will complete the minting in mid May if no production schedule delay and further breakdown or crack of the die. We will take pre-order in SS and pre-sell have been done in 2016 Singapore coin show by 1 silver 1 Pte Ltd. The pre-order price is one pair for version 2 and 3 at USD248. version 2 USD123 Version 3 USD129 PLEASE NOT approach us for the VERSION 1 because we has sold off and no stock. You might also not find in ebay too except collector list for resell.