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<p>[QUOTE=&quot;JPeace$, post: 1845066, member: 42727&quot;]It would be interesting to see how you weight each factor in your algorithm. Depending on the series, many of the silver coins were melted in the early 1900&#039;s under the Pittman Act.&nbsp; A second melt occurred during the 80&#039;s when the Hunt brothers essentially cornered the silver market.&nbsp; How to account for this in survival rates, when no one logged the dates and mint marks of the coins being melted.&nbsp; How will you account for toning?&nbsp; Toning is truly in the eye of the beholder and purely subjective, yet carries large premiums in many cases.</p><p><br /></p><p>After you run your program, I&#039;d be interested to see how those prices compare to the auction prices at Heritage and the other great auction houses.&nbsp; IMO, pricing can only be determined by transactional data.</p><p><br /></p><p>We had a discussion about this on another coin site yesterday.&nbsp; There was a 1870 Half Dime MS66 Gold Bean coin that just sold for 1.5x the &quot;printed&quot; price.&nbsp; IMO, there were many factors that went into this premium price:&nbsp; condition rarity (15 graded MS66 and only 9 in higher grade), toning, gold bean, availability to purchase a coin in this grade.&nbsp; If a condition rare coin only comes up for sale or auction once every 3 years, how do you properly &quot;price&quot; it?&nbsp; BTW, there was an MS67 also sold in the same auction but for 1/3 the price of the MS66.&nbsp; The MS67 also had toning, but it did not add to the eye appeal of the coin.</p><p><br /></p><p>In summary, I applaud your effort to use a scientific method to price coins, but you cannot properly calculate the &quot;human factor&quot; into the equation, so the output will likely be flawed.[/QUOTE]</p><p><br /></p>

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