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<p>[QUOTE=&quot;alurid, post: 8081210, member: 81991&quot;]I think all your coins have type 1 MM&#039;s. Your 1979&#039;s have the blob &#039;S&#039;, and both of your SBA&#039;s have a round hole in the bottom loop.</p><p>&nbsp;I have had this same question about the 1981 type 2 with my own coin. Its hard to find good photos of the differences.</p><p>I have used these as go-by&#039;s.&nbsp; I think the type 1 for 1981 has a protuberance from the curve of the &#039;S&#039; that touches the inside edge the top serif, where as the type 2 has the smallest bit of a gap in this same area.</p><p>Also note the different shape of the holes in the bottom of the &#039;S&#039;.</p><p>type 1 is round, type 2 has a tear drop shaped in these photo&#039;s.</p><p>&nbsp;<a href="http://www.lincolncentresource.com/San_Fransisco_Mintmark_Styles.html" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.lincolncentresource.com/San_Fransisco_Mintmark_Styles.html" rel="nofollow">http://www.lincolncentresource.com/San_Fransisco_Mintmark_Styles.html</a>[/QUOTE]</p><p><br /></p>

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