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<p>[QUOTE=&quot;GDJMSP, post: 1641666, member: 112&quot;]As the name suggest a doubled die occurs when the die is made. It happens because a die is, or was, hubbed twice. Meaning the die blank was pressed into the hub twice. On the second hubbing the die shifted just a little and that shifting is what creates 2 images in the die. The hallmarks of a doubled die are that the edges of doubling will be rounded over and have split serifs.</p><p><br /></p><p>Mechanical doubling occurs when the coin is struck and not during the die making process. The dies can shift, or bounce ever so slightly during the strike. This movement causes the design on the die to shear to one side or the other, shifting the image just a bit. Mechanical doubling produces a flat, shelf like second image instead of the rounded over image of a doubled die. And mechanical doubling will not have split serifs.[/QUOTE]</p><p><br /></p>

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