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<p>[QUOTE=&quot;-jeffB, post: 26281074, member: 27832&quot;]It&#039;s corroded. When a cupronickel coin sits in acid, the nickel tends to dissolve away more quickly than the copper. That slightly reduces the coin&#039;s weight, and what&#039;s left is more copper-colored.</p><p><br /></p><p>A quarter that&#039;s truly missing both outer clad layers would weigh closer to 4.76g, and would be noticeably thinner and more weakly struck than a normal quarter.</p><p><br /></p><p>Welcome to CoinTalk![/QUOTE]</p><p><br /></p>

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