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<p>[QUOTE=&quot;Hommer, post: 2613335, member: 73266&quot;]This type of doubling occurs during the Single Squeeze Hubbing process when the hub and working die faces aren&#039;t perfectly square to each other. When pressure is applied, at some point the faces will slip and align square. At that point, any devices that have formed, become skewed or doubled. Mint employees knew that when they heard a pop when pressure was applied, slight doubling would occur, but they didn&#039;t know why. It was because the faces of the two dies were not exactly parallel when they started. Have they fixed the problem? The answer is no, as there are a good number of 2016 coins with &quot;angled&quot; hub doubling listed now.</p><p><br /></p><p>Edit to add: This doubling can also occur when pressure is released from the die.[/QUOTE]</p><p><br /></p>

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