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<p>[QUOTE=&quot;curtislclay, post: 7805404, member: 89514&quot;]Coins without overstriking on the obverse, but with reverses overstruck with one contemporaneous die over another, of the same or different types, have been noticed and published for centuries, but nobody knew how to explain them, until the idea explained by Doug in his first post above occurred to Colin Kraay in conversation with myself in 1974, when we were discussing such an overstruck As of Caracalla that the Ashmolean Museum had recently acquired. I call them &quot;Kraay overstrikes&quot;, and published the idea for the first time in a major journal in Numismatic Chronicle 2012, since Kraay never published it himself.[/QUOTE]</p><p><br /></p>

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