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<p>[QUOTE=&quot;SuperDave, post: 2575021, member: 1892&quot;]It&#039;s a good rule of thumb that when you can see &quot;clean airspace&quot; between sets of doubled features - like this coin - you&#039;ve got something interesting. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" /></p><p><br /></p><p>That said, significant doubling like this on World issues is not uncommon, and it&#039;d take someone better-versed in this issue to comment on relative rarity. Not all mints imposed the same quality control levels as some others.[/QUOTE]</p><p><br /></p>

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