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<p>[QUOTE="Conder101, post: 2478703, member: 66"]OK googled the reference and read it. While they considered several materials they rejected all but four before they proceeded to further testing, various copper zinc alloys, various aluminum manganese or aluminum magnesium alloys, chrome plated steel, and bronze clad steel. All of them were coined using nonsense dies but we can ignore those, because the coin in question uses regular dies. One one was said to have been coined using regular dies, the aluminum alloy. We know that isn't correct because copper clad steel coins of the regular design do exist. So lets assume that they did strike all four with regular dies. </p><p><br /></p><p>Chrome plated steel would be silver colored and highly magnetic. The coin in question is gold in color and only slightly magnetic. The reference does not give complete specs for the material, (weight and SG) but since steel has a lower density than copper I would expect the chrome plated steel to weigh less than a standard copper cent and have a lower SG. The coin in question weighs the same as a standard copper cent, another reason for rejecting this as a possible composition for the coin in question.</p><p><br /></p><p>Aluminum would be silver in color, WAY lighter than a standard cent, and non magnetic. Three strikes the coin in question is not aluminium.</p><p><br /></p><p>Copper clad steel, would be lighter in weight and have a lower SG than a standard copper cent, but do to tolerance ranges it just might be possible for a copper clad cent blank to be within the lower tolerance range of that of a copper cent. But to be the full legal weight of a copper cent would be highly unlikely. Still we will let that go for the moment and assume it is possible. A copper clad steel cent would show the three layer cladding on the edge of the coin, something that has not been mentioned in reference to the subject coin, and it will be highly magnetic, which the subject coin is not. I think we can eliminate the copper clad steel possibility.</p><p><br /></p><p>This only leaves the copper zinc alloys. A higher zinc content could give you a golden color, and the weight could be within the tolerance range for a standard copper cent. The SG would be lower, but we don't know what the SG of the subject coin is. NONE of the copper zinc alloys though would be even slightly magnetic which the subject coin is. Since none of the alloys are magnetic probably the only way to provide that magnetism would be by plating. (Having a magnetic material contaminating the melt would not do it. The contamination amount would have to be so high it would never be unnoticed.) </p><p><br /></p><p>So if it has to be plated to provide the magnetic property, why assume some exotic alloy underneath, when a plated standard cent is thousands of time more likely? Unless an abnormally low SG is determined there is no reason to assume it to be anything but a plated standard copper cent.[/QUOTE]</p><p><br /></p>
[QUOTE="Conder101, post: 2478703, member: 66"]OK googled the reference and read it. While they considered several materials they rejected all but four before they proceeded to further testing, various copper zinc alloys, various aluminum manganese or aluminum magnesium alloys, chrome plated steel, and bronze clad steel. All of them were coined using nonsense dies but we can ignore those, because the coin in question uses regular dies. One one was said to have been coined using regular dies, the aluminum alloy. We know that isn't correct because copper clad steel coins of the regular design do exist. So lets assume that they did strike all four with regular dies. Chrome plated steel would be silver colored and highly magnetic. The coin in question is gold in color and only slightly magnetic. The reference does not give complete specs for the material, (weight and SG) but since steel has a lower density than copper I would expect the chrome plated steel to weigh less than a standard copper cent and have a lower SG. The coin in question weighs the same as a standard copper cent, another reason for rejecting this as a possible composition for the coin in question. Aluminum would be silver in color, WAY lighter than a standard cent, and non magnetic. Three strikes the coin in question is not aluminium. Copper clad steel, would be lighter in weight and have a lower SG than a standard copper cent, but do to tolerance ranges it just might be possible for a copper clad cent blank to be within the lower tolerance range of that of a copper cent. But to be the full legal weight of a copper cent would be highly unlikely. Still we will let that go for the moment and assume it is possible. A copper clad steel cent would show the three layer cladding on the edge of the coin, something that has not been mentioned in reference to the subject coin, and it will be highly magnetic, which the subject coin is not. I think we can eliminate the copper clad steel possibility. This only leaves the copper zinc alloys. A higher zinc content could give you a golden color, and the weight could be within the tolerance range for a standard copper cent. The SG would be lower, but we don't know what the SG of the subject coin is. NONE of the copper zinc alloys though would be even slightly magnetic which the subject coin is. Since none of the alloys are magnetic probably the only way to provide that magnetism would be by plating. (Having a magnetic material contaminating the melt would not do it. The contamination amount would have to be so high it would never be unnoticed.) So if it has to be plated to provide the magnetic property, why assume some exotic alloy underneath, when a plated standard cent is thousands of time more likely? Unless an abnormally low SG is determined there is no reason to assume it to be anything but a plated standard copper cent.[/QUOTE]
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