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<p>[QUOTE=&quot;Ed Snible, post: 4011118, member: 82322&quot;]The table suggests that Octavian aurei lost half their value from 2014 to 2018.&nbsp; That does not seem stable.</p><p><br /></p><p>Certainly at least one of the n=318 sold twice from 2011 to 2019.&nbsp; If so, can someone add a line or color to link them up?&nbsp; I am curious about individual examples.</p><p><br /></p><p>[USER=99239]@Suarez[/USER] Do you think the 1990s data is unbiased?&nbsp; It is much easier to collect data now.&nbsp; Your site coryssa.org is a great resource.&nbsp; For the 1990s data do you think you have a <i>representative</i> sample?&nbsp; Have you encoded middle-level auctions like Alex G Malloy?</p><p><br /></p><p>Everyone: Typically when a coin type sells for a high price, for example Octavian aurei in 2014 according to the chart, everyone tries to sell their examples at the top of the market.&nbsp; I would predict that would cause prices to decrease, which is what we see here.&nbsp; Do we see the volume of an individual type change in response to last year&#039;s prices?[/QUOTE]</p><p><br /></p>

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