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<p>[QUOTE=&quot;brg5658, post: 1271545, member: 29751&quot;]A study would be very simple to undertake.&nbsp; But, it would be costly.</p><p><br /></p><p>Choose 4 coins from 20 different series, so 80 coins total.</p><p><br /></p><p>Of the 4 coins in each series, choose 2 that are roughly graded XF-AU and 2 that are roughly MS63 to MS66 (depending on the series, MS66 could be hard to find).</p><p><br /></p><p>Send one of the XF and one of the MS coins to PCGS first, and send the other two (one XF and one MS) to NGC first.&nbsp; When you receive the coins back from PCGS and NGC respectively, photograph and document their grades assigned.&nbsp; Crack out the 4 coins and send them to the other grader (NGC to PCGS, and PCGS to NGC).&nbsp; Again, at this state, document with photos the coins pre-submission to verify that no damage was incurred during crack-out.&nbsp; When the coins are returned in their holders, you record, photograph, and document the assigned grades the 2nd time.</p><p><br /></p><p>In total you will have submitted 80 coins to NGC and the same 80 coins to PCGS.&nbsp; You will have submitted them in random order so you can test whether the 2nd submission in general (regardless of grader) was lower graded (because of likely crack out handling, etc).&nbsp; If the grades assigned to the PCGS coins was consistently lower across all series or for certain series you would have a sample size of 4 in each series to determine this.&nbsp; This is about the minimum required to summarize the differences statistically.&nbsp; </p><p><br /></p><p>Total cost:&nbsp; 2 submissions of 40 coins each to both PCGS and NGC (160 grading fees).</p><p><br /></p><p>--------------------------------</p><p><br /></p><p>To reply to Lance:&nbsp; You mentioned the AU grade CBHs.&nbsp; Those, in my opinion, fall under relative high grade for the series.&nbsp; There are a few MS graded, but for the number of people who collect these coins AU is quite high.&nbsp; While I agree with your comment that the majority of collectors do not play the registry game, the prices of almost <b><u>all </u></b>high grade examples of a coin are set by Registry Set owners.&nbsp; You can&#039;t tell me the 1976 Clad Eisenhower dollar that sold in July Heritage auction for $25,000+ graded PR70DCAM wasn&#039;t purchased by a Registry Set player?&nbsp; C&#039;mon.&nbsp; </p><p><br /></p><p>I stand by my opinion that PCGS (even if in part) creates their own demand for their coins.&nbsp; I can also attest that the price guide prices set by PCGS are usually laughable.&nbsp; They are not based on any reality and are sometimes multiples of what coins are actually selling for in auctions.&nbsp; Again, this in-bred pricing creates the appearance of a higher quality item.&nbsp; I just simply don&#039;t believe it&#039;s true.</p><p><br /></p><p>All the best,</p><p>-Brandon[/QUOTE]</p><p><br /></p>

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