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<p>[QUOTE=&quot;coppercoins, post: 565903, member: 152&quot;]Well, the answer lies within a question, actually.&nbsp; &quot;With what precision?&quot;</p><p><br /></p><p>Under typical conditions, say a 20X-30X microscope - I would say one in a thousand dies would receive a mintmark that was substantially close enough in position to a different die so as to make them impossible at this magnification to tell the difference between the two.&nbsp; Now that both would have the same spread as a repunched mintmark is a one in a million long shot...which is why mintmark position alone is not reliable unless far enough off to see under typical magnification.</p><p><br /></p><p>I know of a number of Lincoln cent repunched mintmarks that REQUIRE a 30X overlay to detect as being different from another, but I know of only one pair that is undetectable as being different dies at typical magnification even with an overlay.&nbsp; This pair of 1960D repunched mintmarks was only split with the keen eye and good detective work of John Bordner a number of years ago, and is currently listed as two different dies by many.&nbsp; The mintmark AND doubling are identical...the only thing that separates the two are die markers that happened in such a way as to prove that two different dies had to be used to create the coins.&nbsp; Unfortunately right now I do not remember the die numbers for this rare occurrence.</p><p><br /></p><p>A simple example of a doubled die that remarkably resembles another, thus die scratches and gouges have to be used to detect them as different would be 1972P-1DO-003 and 1972P-1DO-008.&nbsp; The spread of doubling on these two dies is so similar, they are virtually identical even under magnification.&nbsp; Again, the only thing that definitely separates these two dies are markers that could not have all occurred on the same die.[/QUOTE]</p><p><br /></p>

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