http://coinauctionshelp.com/Coin_Help_Blog Information, guides, images for collecting, buying US Coins Tue, 31 Jan 2012 19:25:33 +0000 en hourly 1 http://wordpress.org/?v= http://coinauctionshelp.com/Coin_Help_Blog/2010/03/07/doubled-die-mint-error-or-machine-doubling-how-to-identify-double-dies/ http://coinauctionshelp.com/Coin_Help_Blog/2010/03/07/doubled-die-mint-error-or-machine-doubling-how-to-identify-double-dies/#comments Sun, 07 Mar 2010 13:57:04 +0000 Daniel Malone http://coinauctionshelp.com/Coin_Help_Blog/?p=618 http://coinauctionshelp.com/Coin_Help_Blog/2010/03/07/doubled-die-mint-error-or-machine-doubling-how-to-identify-double-dies/feed/ 2