Great answer.. shaking my head.. Merc.. go http://www.coinresource.com/articles/doubled_dies.htm"]HERE JT describes it in a way that you as well as ANYONE who reads it should understand.
it is where they take the master hub and press it into the die, they used to do this repeatedly to get all the detail and they werent perfect, nobody is. and when they went to take the 2nd impression it was turned slightly. cody
His explanation is good up to the lack of explanation of "single squeeze" hubbing which doesn't allow the traditional doubled hubs ( more than 1 hub pressing), but from which we still get Doubled Die coins Jim
