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<p>[QUOTE=&quot;John Anthony, post: 1617792, member: 42773&quot;]<b>1965-1970, 1976 BU, PR</b></p><p><b><br /></b></p><p><b></b>From 1965 to 1970, the Kennedy Half Dollars were minted of clad silver. The same composition was used in 1976 for the BU and PR collector coins. The outer clad layer of these issues is only 80% silver, so they tone very differently. I&#039;ve seen a handful of rainbow toners, but more common is this kind of copper-mottled toning, for lack of a better term. Perhaps the higher copper content makes them turn this color, and it can be quite beautiful...</p><p><br /></p><p><a href="http://postimage.org/" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://postimage.org/" rel="nofollow"><img src="http://s7.postimage.org/hvppolpgb/69a1.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></a></p><p><br /></p><p><a href="http://postimage.org/" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://postimage.org/" rel="nofollow"><img src="http://s1.postimage.org/5n3rdhkj3/67b.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></a></p><p><br /></p><p>These are two different coins - a 67 and a 69.</p><p><br /></p><p>Finding rainbow hued issues from these years might be more of a challenge. This is the more characteristic pattern.[/QUOTE]</p><p><br /></p>

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