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<p>[QUOTE=&quot;ctrl, post: 1469350, member: 13378&quot;]The uncertainty will always exist because coin grading is ultimately a subjective process at some level. You might be able to reach a certain level of consensus, but there will always be a range of variability. </p><p><br /></p><p>Since it is possible, and everyone knows it, that you can have 5 coins of the same accurately graded level, and rank them in order of quality, CAC tries to reduce the uncertainty of where a given coin falls in a range within a given grade level. MS65.0-MS65.3 = no sticker; MS65.4-MS65.9 = green sticker.</p><p><br /></p><p>This reduction in uncertainty is why people are more willing to buy or even pay a little extra for a coin with a CAC sticker. Having a second opinion reduces uncertainty more than having just one opinion (e.g. the TPG grade alone). </p><p><br /></p><p>If TPGs used a more fine-grained scale and were more reliable, then CAC wouldn&#039;t have a market in which to exist. CAC exists only because of the already-existing uncertainty in TPG grades. People are willing to pay more for the reduced uncertainty, especially for internet and remote purchases.[/QUOTE]</p><p><br /></p>

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