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Have vending machines motivated the issue of certain coins?
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<p>[QUOTE="CaptHenway, post: 4960702, member: 13813"]Actually, on the cu-ni clad dimes, quarters and halves, the net nickel content is 8.333% of the total weight. The proportions of the clad layers to the core are 1:4:1, so that each clad layer is 1/6th the thickness of the coin and the two clad layers together are 2/6th or 1/3rd the thickness of the coin. The clad layers are 25% nickel, or 1/4, so 1/4 x 1/3 = 1/12th, or .083333. Thus 91.667% copper, 8.333% nickel.</p><p><br /></p><p>On the Susan B. Anthony dollars, they increased the thickness of the clad layers to protect the coins during the heavy usage they were going to get in circulation and vending machines. Yeah, right! The proportions are 1:2:1, so each coin is 1/2 copper nickel. and 1/2 x 1/4 = 1/8, or .125000. Thus 87.5% copper, 12.5% nickel. </p><p><br /></p><p>Not positive on the Ikes. I am 99% sure they are the same as the dimes, quarters and halves, but need to look it up and don't have the time right now.</p><p><br /></p><p>TD[/QUOTE]</p><p><br /></p>
[QUOTE="CaptHenway, post: 4960702, member: 13813"]Actually, on the cu-ni clad dimes, quarters and halves, the net nickel content is 8.333% of the total weight. The proportions of the clad layers to the core are 1:4:1, so that each clad layer is 1/6th the thickness of the coin and the two clad layers together are 2/6th or 1/3rd the thickness of the coin. The clad layers are 25% nickel, or 1/4, so 1/4 x 1/3 = 1/12th, or .083333. Thus 91.667% copper, 8.333% nickel. On the Susan B. Anthony dollars, they increased the thickness of the clad layers to protect the coins during the heavy usage they were going to get in circulation and vending machines. Yeah, right! The proportions are 1:2:1, so each coin is 1/2 copper nickel. and 1/2 x 1/4 = 1/8, or .125000. Thus 87.5% copper, 12.5% nickel. Not positive on the Ikes. I am 99% sure they are the same as the dimes, quarters and halves, but need to look it up and don't have the time right now. TD[/QUOTE]
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