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<p>[QUOTE=&quot;physics-fan3.14, post: 22682706, member: 19165&quot;]No. A 64 would not have the same sort of toning as your 58. In 58, the mint sets were shipped in cardboard holders, hence the toning (from the sulfur in the holder). Mint set toning is characterized by the &quot;speckled&quot; feel that yours shows. </p><p><br /></p><p>In 1959, the mint sets were changed to plastic (cellophane). Anything after this will not demonstrate the classic &quot;mint set toning&quot; that the late 50&#039;s are famous for.[/QUOTE]</p><p><br /></p>

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