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<p>[QUOTE=&quot;Kentucky, post: 2581807, member: 33176&quot;]For proof sets, prior to 1955 were packaged in cardboard boxes wrapped in tissue paper.&nbsp; In 1955 they issued the first &quot;flat pack&quot; in plastic.&nbsp; They&#039;ve been in plastic ever since.&nbsp; If you have anything before 1955, be careful.&nbsp; After 1955, as long as the coins remain in their plastic cocoons, everything should be OK (even if you open the paper envelope.&nbsp; I think everything I said is accurate.[/QUOTE]</p><p><br /></p>

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