I just open a new roll of 1971-S ans in about 1/2 way thur the roll I found this one. is it a DDO or just mach doubling?
that would be machine doubling because of the shelf like appearance for some pics and all kinds of good information try http://www.lincolncentresource.com/index.html that is probably the best online guide IMO keep searching they are out there
thanks guy's!!!!!!!!!!!!!!!!!!!! but it sure a nice one to.I posted it so someone may lean what D/D and what's mach doubling!