"Invisible" <voi### [at] devnull> wrote in message 
news:48736b4f$1@news.povray.org...

> Although... the coins aren't pure copper, are they?

  No, they are in fact mild steel, or at least some kind of ferrous alloy. 
Hold a magnet to a newish copper coin. I say copper because they're actually 
copper plated. They started doing this (in the UK), about 8 years ago I 
think.

    ~Steve~

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