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<p>[QUOTE=&quot;Marshall, post: 1081853, member: 21705&quot;]Thank you for the opportunity to go into this.</p><p><br /></p><p>In 1949, William Sheldon introduced several new concepts for evaluating coins. </p><p><br /></p><p>One was the 70 point grading system we use with some modifications for determining a coin&#039;s wear or grade. It has evolved from strictly wear (detail grade) into net grading or value grading. There are other threadss you can pull up to find this discussed further.</p><p>&nbsp;</p><p>Another concept is a rarity scale which would indicate the difficulty with finding any particular variety of Large Cent. It began as an 8 point scale and has been expanded to a 24 point scale with the introduction of the +/ / - after the R.</p><p><br /></p><p>I will give you the current definitions for Early Date Large Cents which I believe is commonly used on many other coins as well. But check the legends carefully because some rarity scales on other systems are different.</p><p><br /></p><p>The following is a count or estimate of the total population of a variety which has survived and currently exists.&nbsp; It is estimated about 2% of the original mintage of Large Cents has survived. Sheldon excluded those coins impounded permanently with the ANA collection, but I don&#039;t think they are excluded in the current usage of the scale.</p><p><br /></p><p>NC - Non-collectible Variety</p><p><i>NC</i> - <i>Now Collectible Variety</i> - After a variety has had a fourth coin discovered, formerly Non-Collectible varieties change to this designation.</p><p><br /></p><p>R8+ 1 Unique - Only one specimen.</p><p>R8&nbsp;&nbsp; 2 Nearly Unique - Only two specimens.</p><p>R8-&nbsp; 3 Nearly Unique - Only three specimens.</p><p><br /></p><p>R7+ 4-6 - Extremely Rare</p><p>R7&nbsp;&nbsp; 7-9 - Extremely Rare</p><p>R7-&nbsp; 10-12 - Extremely Rare</p><p><br /></p><p>R6+ 13-18 - Very Rare</p><p>R6&nbsp;&nbsp; 19-24 - Very Rare</p><p>R6-&nbsp; 25-30 - Very Rare</p><p><br /></p><p>R5+ 31-45 - Rare</p><p>R5&nbsp;&nbsp; 46-60 - Rare</p><p>R5-&nbsp; 61-75 - Rare</p><p><br /></p><p>R4+ 76-117 - Very Scarce</p><p>R4&nbsp;&nbsp; 118-158 - Very Scarce</p><p>R4-&nbsp; 159-200 - Very Scarce</p><p><br /></p><p>R3+ 201-300 - Scarce</p><p>R3&nbsp;&nbsp; 301-400 - Scarce</p><p>R3-&nbsp; 401-500 - Scarce</p><p><br /></p><p>R2+ 501-750 - Not So Common</p><p>R2&nbsp;&nbsp; 751-1000 - Not So Common</p><p>R2-&nbsp; 1001-1250 - Not So Common</p><p><br /></p><p>R1&nbsp; &gt;1251 Common - While this has sometimes been broken down to R1+, R1 and R1-, I haven&#039;t seen population estimates for them since there is no practical or financial distinction made. I suppose there are some common coins which are seen more often than others and that is the point being made.[/QUOTE]</p><p><br /></p>

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