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<p>[QUOTE=&quot;TIF, post: 3630619, member: 56859&quot;]I tried a few searches when the service was unveiled and tried it again just now using the auction house images of my Entella tetradrachm.&nbsp; The first hit, scoring 9.0, was the auction listing (the picture I used).&nbsp; Is 9.0 the highest score?&nbsp; I hope so since it was not just the same coin but the <i>same</i> image I used for the search.&nbsp; The second hit scored only 5.1 but it was also the <b>same</b> coin but from a prior auction.&nbsp; The exact coin made a third appearance on the list but in 8th position, scoring only 4.2. Those images were of course slightly different but at a glance it is easy to see that they are all the exact same coins.&nbsp; I haven&#039;t scrutinized the other 31 hits but it looks like many are obverse die matches.&nbsp; Those scores range from 1.1-4.5 so I&#039;m not sure how useful this is.</p><p><br /></p><p>While this service is nice, I&#039;ll probably just continue to search for prior sales and die matches manually.&nbsp; Is it worth spending money to have a computer look at the pictures for you?&nbsp; For instance, [USER=74968]@Orfew[/USER] could have found the prior sale of his Domitian/Minerva denarius by doing a search, although I guess with a common type of coin the large number of hits makes for a very tedious search. However, based on the plethora of Flavian rarity/variations shown by David, Andrew, and others, apparently those are frequently mis-cataloged because the cataloguer doesn&#039;t notice whatever detail makes them different.&nbsp; Perhaps an image-based search would help catch these mis-catalogued sales, although it is still going to require a human looking a bunch of search hits to find ones which are truly matches.[/QUOTE]</p><p><br /></p>

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