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<p>[QUOTE="physics-fan3.14, post: 3997972, member: 19165"]To further clarify, because I'm guessing a lot of people don't know what that term means:</p><p><br /></p><p>The Master Hub was used to make a Master Die. Sometimes, more than one master die might be made in a year (the date was added to the master die). The Master Die was then used to make working hubs. The working hubs were then used to make working dies. The working dies were the dies which actually struck the coin. The mintmark, if any, would be applied to each working die individually. </p><p><br /></p><p>If there was doubling on the working hub, then any die made from that hub would also show doubling. This is somewhat uncommon, but because a hub would make many dies, when it did occur that doubling would be widespread. Because of this, possibly every coin from that year would show the same doubling![/QUOTE]</p><p><br /></p>
[QUOTE="physics-fan3.14, post: 3997972, member: 19165"]To further clarify, because I'm guessing a lot of people don't know what that term means: The Master Hub was used to make a Master Die. Sometimes, more than one master die might be made in a year (the date was added to the master die). The Master Die was then used to make working hubs. The working hubs were then used to make working dies. The working dies were the dies which actually struck the coin. The mintmark, if any, would be applied to each working die individually. If there was doubling on the working hub, then any die made from that hub would also show doubling. This is somewhat uncommon, but because a hub would make many dies, when it did occur that doubling would be widespread. Because of this, possibly every coin from that year would show the same doubling![/QUOTE]
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