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<p>[QUOTE=&quot;adelv_unegv, post: 201623, member: 7247&quot;]It&#039;s my understanding that the &quot;doubled-die&quot; error occured (past tense) from multiple &#039;squeezes&#039; of hub-to-die impressions.&nbsp; That is, the metal the die is made of work hardens too much to fully impress the design elements in one operation.&nbsp; The unfinished die must then be heated to soften the metal again (annealing) then it must be put back in the um, for lack of proper terminology, &#039;the squeezer.&#039;&nbsp; The doubling, -- as I understand it -- comes from not having the die properly re-aligned for the second squeeze.</p><p><br /></p><p>hopefully someone will come around and give a better explaination of that error and how modern doubling errors occur with the &#039;single-squeeze&#039; method.[/QUOTE]</p><p><br /></p>

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