Posted 07/09/2008 2:51 pm
Dies aren't set in the press so that their faces are parallel. Notice how unusually sharp the denticals and rim are on the left hand side of the coin. The die faces were too close together on that side and too far apart on the right side. So when they came together on the planchet they hit on the left side first and that side struck up well, but stopped the dies before the right side could strike up.
