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<p>[QUOTE=&quot;Publius2, post: 8197420, member: 105571&quot;][USER=85284]@Cheech9712[/USER], just to add some detail to @Condor101&#039;s excellent reply, here are the defined numbers associated with each rarity scale.&nbsp; Note that any coin with an estimated rarity is subject to change as the known number of coins can change with time and additional discoveries.&nbsp; You will also sometimes see a coin labeled, for example, &quot;R-4+&quot;.&nbsp; This means that someone, often but not always a credible and widely recognized expert, has estimated that the R-4+ coin is closer to a population of 76 than it is to a population of 200.</p><p><br /></p><p>Specialty collector clubs such as Early American Coppers, John Reich Collectors Society and others often conduct censuses of the coins in their members hands in an attempt to ascertain the number and condition of coins.&nbsp; These censuses are necessarily incomplete and are but one of the tools used to estimate rarity.&nbsp; </p><p><br /></p><p><u>Sheldon Scale</u>:</p><p>R-1:&nbsp; Common, over 1000</p><p>R-2:&nbsp; Fairly Common, 501-1000</p><p>R-3:&nbsp; Scarce, 201-500</p><p>R-4:&nbsp; Very Scarce, 76-200</p><p>R-5:&nbsp; Rare, 31-75</p><p>R-6:&nbsp; Very Rare, 13-30</p><p>R-7:&nbsp; Extremely Rare, 4-12</p><p>R-8:&nbsp; Unique or Nearly Unique, 1-3</p><p><br /></p><p><u>Universal Rarity Scale</u>:</p><p>URS-1:&nbsp; 1 known, unique</p><p>URS-2:&nbsp; 2 known</p><p>URS-3:&nbsp; 3 or 4</p><p>URS-4:&nbsp; 5 to 8</p><p>URS-5:&nbsp; 9 to 16</p><p>URS-6:&nbsp; 17 to 32</p><p>URS-7:&nbsp; 33 to 64</p><p>URS-8:&nbsp; 65 to 124</p><p>URS-9:&nbsp; 125 to 249</p><p>URS-10: 250 to 499</p><p>URS-11: 500 to 999</p><p>URS-12: 1000 to 1999</p><p>URS-13: 2000 to 3999</p><p>URS-14: 4000 to 7999[/QUOTE]</p><p><br /></p>

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