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1936 Indian Head Nickle problem
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<p>[QUOTE="Conder101, post: 444702, member: 66"]42 years as a numismatist reading everything I can get my hands on, including books on error coins. Looking at coins and trying to figure out what would have to happen in order to get the effect I'm seeing. Thinking about exactly what happens during the striking of a coin slowing down the process mentally and seeing what is going on, how the metal is moving, where it is moving to. One thing I think every collector really needs, and few have is a THROUGH understanding of how coins are made. </p><p><br /></p><p>There are still some things that I don't understand. I need a better understanding of the blanking process. A clipping blank is formed when the strip fails to feed properly or the punch press fails to shift properly. (The punch press has either one row of punches tha shifts from side to side about one radius between punches, or two row with the second row offset one radus. This allows more planchets to be punched from the strip.) Now with this setup I can easily see how ou can get a straight clip, a curved clip, two straight clips, a straight and a curved or two curved clips. I could also see a Y or a bowtie fragment. Now the two straight or straight and curved clip combinaion should be 90 degrees apart, and the two curved clips should never be 60 degrees apart or 180 degrees apart. But yet they do come at different separations. And I can't see how you could have me than two clips yet multiple clips are known.[/QUOTE]</p><p><br /></p>
[QUOTE="Conder101, post: 444702, member: 66"]42 years as a numismatist reading everything I can get my hands on, including books on error coins. Looking at coins and trying to figure out what would have to happen in order to get the effect I'm seeing. Thinking about exactly what happens during the striking of a coin slowing down the process mentally and seeing what is going on, how the metal is moving, where it is moving to. One thing I think every collector really needs, and few have is a THROUGH understanding of how coins are made. There are still some things that I don't understand. I need a better understanding of the blanking process. A clipping blank is formed when the strip fails to feed properly or the punch press fails to shift properly. (The punch press has either one row of punches tha shifts from side to side about one radius between punches, or two row with the second row offset one radus. This allows more planchets to be punched from the strip.) Now with this setup I can easily see how ou can get a straight clip, a curved clip, two straight clips, a straight and a curved or two curved clips. I could also see a Y or a bowtie fragment. Now the two straight or straight and curved clip combinaion should be 90 degrees apart, and the two curved clips should never be 60 degrees apart or 180 degrees apart. But yet they do come at different separations. And I can't see how you could have me than two clips yet multiple clips are known.[/QUOTE]
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1936 Indian Head Nickle problem
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