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<p>[QUOTE=&quot;GDJMSP, post: 25722137, member: 112&quot;]Just a comment. The vast majority of the time you wouldn&#039;t have a problem doing that - but - there are cases where you could/would.</p><p><br /></p><p>Strike designations for example. There are cases where NGC and PCGS do not use/assign the same strike designation to a given coin. What NGC calls SP, PCGS may call MS or PF - or vice versa. So the NGC ID and the PCGS coin number are not always going to correspond to the same given coin. So by using those numbers to search for some coins there will be times when you come up with different results. </p><p><br /></p><p>There have also been times where NGC and or PCGS have changed their previous strike designation for some coins. </p><p><br /></p><p>Both of these things can easily create problems particularly when a crossover has been used. </p><p><br /></p><p>It&#039;s just stuff that one needs to be aware of if you are going to use these numbers for purposes of searching or anything else. And if you throw ANACS and ICG into the mix, well, I think you can imagine.[/QUOTE]</p><p><br /></p>

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