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<p>[QUOTE=&quot;jlblonde, post: 1351731, member: 32000&quot;]Thx guys. </p><p><br /></p><p>Ok...so that&#039;s a good start. </p><p><br /></p><p>Now, how does that occur or why? What conditions would allow a single or a handful coin(s) out of thousands, if not the entire 1.4 million, of these that were minted allow this one to turn bright red?</p><p><br /></p><p>Did someone soak it? Maybe, but there are no pit marks usually associated when metal is dipped or soak in a caustic substance.</p><p><br /></p><p>Wear? The top layer was not rubbed off. The detail of the coin is almost intact.</p><p><br /></p><p>Climate? Belgium is not in the tropical regions where hot wet climates tend to tarnish or affect the patina of coins to the point where they rust or take on a completely different look (except for iron or zinc coins), such as in the Caribbean or Oceania.</p><p><br /></p><p>Examples? If anyone has examples of copper-nickel coins wear the the nickel is gone and the copper has shown through, I would definitely like to see them. Curious.</p><p><br /></p><p>Clad or solid? From what I understand the coin above is solid CN not copper with a CN clad. </p><p><br /></p><p>Error? I would assume that this coin may just be an error, but I need confirmation on that by at least two knowledgeable souls on Belgian coinage in regards to their minting procedures and history.</p><p><br /></p><p><br /></p><p>Fun Facts:</p><p><br /></p><p>Copper-Nickel: The addition of nickel to copper improves strength and corrosion&nbsp; resistance but good ductility is retained. Copper-nickel alloys have&nbsp; excellent resistance to marine corrosion and biofouling.&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; The two main alloys are 90/10 and 70/30. </p><p><br /></p><p>The word is cupro<i><b>nickel</b></i> and it&#039;s just what it says, a&nbsp; combination of copper and nickel. The outer cladding of dimes, quarters,&nbsp; and halves is an alloy of 25% nickel and 75% copper, for example.[/QUOTE]</p><p><br /></p>

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