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Message:: [QUOTE="i2i, post: 3515718, member: 102748"]--just another example. For the heck of it. It looks the same, and same date. ...more wear, though?--I wouldn't search for something so obscure. Find it in a post from 2012, and then use it to "contrast". --although. Some of the "mystery" and ambiguity between MD and true doubling can be solved with a "new" class of "incomplete engraving doubling"?Here is one of the problems:- in true doubling the doubling is considered "uniform" and die markers are used. But they have "early" and "late" stages. Meanwhile, many cases of machine doubling are MORE uniform...of course, not all. Die markers can just as easily be used on these cases of machine doubling (i.e., "incomplete engraving doubling).Another oddity is the various array of directions a machine doubling can have. Others pondered how a push or slide of the die could cause as many an 4 different directions at once. Keep in mind this type of doubling occurs ONCE in a fraction of a second. There are striking issues that could account for various directions but that makes things even more convoluted, and does not apply to this issue...[/QUOTE]