Composition Of Coins - Coin Community Forum

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Author	Replies: 5 / Views: 1,609
SilverArt New Member Canada 49 Posts	Posted 10/24/2013 5:19 pm Does anyone know what could have made up the coins inside the crystal? It is a late 80s product from China. Edited by SilverArt 10/24/2013 5:32 pm Report this Post to the Staff

Numismat Pillar of the Community United States 1666 Posts	Posted 10/26/2013 5:03 pm They appear to be gilded with the gold color, which is typical of novelty items like this. Pretty sure if you cut one open the color would be different. Report this Post to the Staff
manymore Valued Member United States 347 Posts	Posted 10/26/2013 11:16 pm This Chinese website is selling the item for 300 yuan which is about US$49. The description states that they are non-circulating "coins" which commemorate the Chinese zodiac animals for the years 1981-1992. The "coins" were produced at the "China Mint Company Shanghai Mint" but the composition of the "coins" is not mentioned. Gary Report this Post to the Staff
SilverArt New Member Canada 49 Posts	Posted 10/28/2013 11:12 pm Thank you all for the great info. Looks like the "coins" should come with a certificate but mine was missing when I got it as a gift many years ago. Edited by SilverArt 10/28/2013 11:57 pm Report this Post to the Staff
Sap Moderator Australia 16861 Posts	Posted 10/29/2013 12:07 am I believe they are the same little mint medallions they include with the mint sets each year, aren't they? If so, then they aren't technically "coins". Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis Report this Post to the Staff
sel_69l Bedrock of the Community Australia 21788 Posts	Posted 10/29/2013 01:59 am My guess it that they are made from aluminium bronze. If that is the case, they would be the same colour all the way through. Australian aluminium bronze proof coins look very similar to gold, when they are struck as proofs. Set into an acrylic suspension such as seen here, makes the proof gold appearance look quite effective. The Australian gold coloured $1 and $2 coins are made from this. Their composition is 92% Cu 6% Al 2% Ni As quite a few of us in the CCF may know Al, instantly develops a very thin protective surface layer of Aluminium Oxide., which protects the metal underneath. Thus, Aluminium can retain almost all of it's metallic lustre. This ability to resist corrosion is imparted on Aluminium bronze. The small admixture of Nickel is to harden the alloy. Report this Post to the Staff
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