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1861 IHC Pattern Judd 274
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<p>[QUOTE="calcol, post: 8407235, member: 77639"]Probably not. Regular 1861 IHCs were copper-nickel with nickel being 12%. Copper has a sp.gr. of 8.8-9.0 g/cc and nickel has a sp. gr. of 8.9 g/cc … essentially the same.</p><p><br /></p><p>However, there are enough jewelers, coin dealers and bullion dealers that have handheld x-ray fluorescence spectrometers that it would be a whole lot more certain and easier to take the coin to one of them. If the coin has nickel in it, it’s not pure copper.</p><p><br /></p><p>Cal[/QUOTE]</p><p><br /></p>
[QUOTE="calcol, post: 8407235, member: 77639"]Probably not. Regular 1861 IHCs were copper-nickel with nickel being 12%. Copper has a sp.gr. of 8.8-9.0 g/cc and nickel has a sp. gr. of 8.9 g/cc … essentially the same. However, there are enough jewelers, coin dealers and bullion dealers that have handheld x-ray fluorescence spectrometers that it would be a whole lot more certain and easier to take the coin to one of them. If the coin has nickel in it, it’s not pure copper. Cal[/QUOTE]
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