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<p>[QUOTE=&quot;Numbers, post: 2458491, member: 11668&quot;]Your estimate is a bit high....&nbsp; There are 25 possible blocks per district (excluding O and Z, but including *) for a total of 300, but it&#039;s very unusual for a single series to actually use even half that many.</p><p><br /></p><p>The all-time record is the 1995 $1 with 210 different blocks (199 regular and 11 star), but in recent years the typical $1 series have been coming in at around 100 blocks--there were 109 in Series 2009, 112 in Series 2006, 93 in Series 2003A.</p><p><br /></p><p>The record for non-$1&#039;s is the 1996 $20 with 85 blocks, though the 2009A $100 may pass it soon; it&#039;s currently at 81 blocks and counting.[/QUOTE]</p><p><br /></p>

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