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<p>[QUOTE=&quot;impala, post: 29138, member: 1759&quot;]Hello,</p><p><br /></p><p>&nbsp;While searching a circulated roll I found a group of 1981 P Lincoln&#039;s that have a yellowish color. These coins are very, very clean and bright so appear to have been only lightly circulated.</p><p>&nbsp;</p><p>&nbsp;Took them to work and used our lab&#039;s digital scale with the following results:</p><p>3.156 gm / 3.148 gm / 3.131 gm / 3.125 gm</p><p><br /></p><p>&nbsp;As a control I weighted some normal colored 1981 P Lincoln&#039;s with the following results:</p><p>3.072 gm / 3.099 gm / 3.028 gm</p><p><br /></p><p>&nbsp;A reference book states these Lincolns should weigh 48 grains +/- 2 grains and that one gram equals 15.432 grains. Using these values it appears all the coins are with-in tolerance although the yellowish ones are on the high end.</p><p><br /></p><p>&nbsp;Is there any other test besides using the specrometer at work to &quot;burn&quot; the coins thereby destroying them?</p><p><br /></p><p>&nbsp;Been lurking a while and enjoyed the posts.</p><p><br /></p><p>Thanks in advance for any help,</p><p><br /></p><p>Eugene[/QUOTE]</p><p><br /></p>

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