Cook Islands Dollar 2007 - Coin Community Forum

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Author	Replies: 2 / Views: 1,141
Pertinax Pillar of the Community United Kingdom 2145 Posts	Posted 03/03/2015 7:01 pm The dollars KM 1196 to KM1200 are gold-plated cupro-nickel. I realise the gold plating is very thin - but how thin ? What is the weight of gold and what karat, per coin, please ? Report this Post to the Staff

Sap Moderator Australia 17005 Posts	Posted 03/04/2015 03:09 am It's my understanding (someone with experience in the industry is free to correct me on this) that it's much easier and cheaper to electroplate things in pure gold than in gold that is less pure, so for something that is purely decorative, the fineness of the plating is almost certainly 24k. The weight, however, is infinitesimal; electroplated gold only needs to be a few microns thick to look good, and a few microns even of a dense metal like gold covering the surface of a large dollar-sized coin amounts to less than 0.01 grams. 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 21792 Posts	Posted 03/04/2015 08:16 am Sap is right. The value of the gold plating would negligible, almost to the point of having no value. I would keep the coin for no other reason than it looks good. Report this Post to the Staff
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