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Within a set, not all coins have the same value and rarity. Sets in the PCGS Set Registry are weighted on a 1 to 10 scale with 10 being the rarest coin and 1 being the most common. While it may be in true in some instances that a coin may be many times over 10 as rare as the most common coin in the set, the Registry keeps the scale simple so that all levels of collectors can compete.
