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<p>[QUOTE=&quot;Hommer, post: 3294111, member: 73266&quot;]For that coin, yes. Machine doubling is quite common on Kennedy halfs. It is caused by the die vibrating or bouncing after it strikes the coin. I&#039;ve often wondered if the reason it is so common, is the amount of pressure it takes to strike those coins.[/QUOTE]</p><p><br /></p>

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