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<p>[QUOTE=&quot;physics-fan3.14, post: 3931581, member: 19165&quot;]Honestly... not really. </p><p><br /></p><p>This is a very difficult area to judge accurately. There are attribution guides and updates that provide rarity scales. There are also historical records that provide prices for each variety sold. For example, if you are inquiring about Bust Halves, you should search out Steve Hermann&#039;s Auction Prices Realized. I&#039;d assume other series have other dedicated researchers which publish similar catalogues. Search out the collector club for the series you are interested in for the best results. </p><p><br /></p><p>Your other option... Heritage Archives. Heritage lists each coin by variety. Even coins which aren&#039;t attributed on the slab are usually attributed in the auction listing. Just search for the date, series, variety, and you should get a listing of every sale of that coin. </p><p><br /></p><p>As a general rule, however, anything R1, R2, or R3 isn&#039;t worth a premium. An R4 may be worth a slight premium (depending on the grade - higher grade, higher premium). R5 and up will be worth a significantly higher premium. Looking at the Heritage archives will show that to be the case. There is no hard and fast rule, however.... R5 = 20%, R6 = 35%, etc..... that would be nice, wouldn&#039;t it?[/QUOTE]</p><p><br /></p>

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