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<p>[QUOTE=&quot;physics-fan3.14, post: 2550952, member: 19165&quot;]No. The TPGs make their business, and stake their reputation, on their consistency. Collectors argue about that consistency all day long and love to point out the outliers - but the fact is, on average the TPGs are very accurate and relatively consistent. A large batch is graded the same as an individual coin. </p><p><br /></p><p><br /></p><p><br /></p><p>There is actually a pretty decent chance that the graders themselves don&#039;t even *know* which coins came in together. </p><p><br /></p><p>One of the only times where a group of coins came in together will influence the graders is when the coins all exhibit similar characteristics. For example, a few years ago, a coin doctor was caught because he submitted a batch of coins which he had artificially toned. There were a number of coins, from different series, which all exhibited similar toning characteristics. These coins all had golden yellow fading to burnt orange and pink colors - they were quite attractive, and quite convincing. But because there were several coins with similar (unusual) toning patterns at the same time, the graders became suspicious and correctly identified that they were AT.[/QUOTE]</p><p><br /></p>

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