I found a 1974 D penny that appears to have strong doubling of the mint mark.I can't seem to find it anywhere.A D is stamped over D.Has anyone else seen that or guide to to more information?Thanks.
Unfortunately we can't help with out photos but here is a link to a site that has nine varieties of 1974 d Repunched Mintmarks to look at and compare. http://www.coppercoins.com/diesearch.php Richard