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<p>[QUOTE="medoraman, post: 1780774, member: 26302"]There have been some good threads here about cleaned copper. I would suggest you search for them. Basic thing I can say is always pay attention under a loupe where the devices rise from the fields, and learn what the correct colors are for large cents. I am betting Tom was able to tell from the color if he was immediately able to tell they were cleaned, (assuming they were not red).</p><p> </p><p>Good practice for you would be to look through something like Heritage's archives of large cents. Look at all of the cents in problem free holders, and I mean look at hundreds. Then, look at yours with fresh eyes. Seeing good coins over and over again many times is terrific training on how to spot problem coins. Us old geezers are lucky in that we have looked at tens of thousands of coins, and many times even though I cannot immediately enunciate the problem, my eye notices something is "off".</p><p> </p><p>Besides, what is more fun than looking at hundreds and hundreds of coins? <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>
[QUOTE="medoraman, post: 1780774, member: 26302"]There have been some good threads here about cleaned copper. I would suggest you search for them. Basic thing I can say is always pay attention under a loupe where the devices rise from the fields, and learn what the correct colors are for large cents. I am betting Tom was able to tell from the color if he was immediately able to tell they were cleaned, (assuming they were not red). Good practice for you would be to look through something like Heritage's archives of large cents. Look at all of the cents in problem free holders, and I mean look at hundreds. Then, look at yours with fresh eyes. Seeing good coins over and over again many times is terrific training on how to spot problem coins. Us old geezers are lucky in that we have looked at tens of thousands of coins, and many times even though I cannot immediately enunciate the problem, my eye notices something is "off". Besides, what is more fun than looking at hundreds and hundreds of coins? :)[/QUOTE]
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