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<p>[QUOTE=&quot;eddiespin, post: 2658347, member: 4920&quot;]I&#039;ll take a shot. In hub doubling, the hub is doubled and the die is struck clean with the hub imparting the doubling to the die. In die doubling, the hub isn&#039;t doubled, however it skips on the die, or strikes the die twice, and the second striking is a little bit off in relationship to the first impression, leaving the second impression adjacent to the first impression on the die. That&#039;s the way it happens in traditional doubling. Those &quot;extra thumbs,&quot; e.g., I still don&#039;t know what the hell the significance of those are.[/QUOTE]</p><p><br /></p>

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