The 1830 Medium Letters Large Cent is a very scarce variety. Sometimes called the Small Letters Reverse, this variety has reverse lettering that is slightly smaller than that of the Large Letters variety (the attribution illustration above is very useful in telling the two varieties apart). Because this is a "Redbook" variety and the supply is low, prices tend to be higher than normal because of intense collector demand. Most collectors will have to settle for a circulated example because only one Mint State example exists and, it is a beauty -- PCGS MS67BN with traces of red in the protected areas. That particular coin came out of Florida in 1979, went into Ted Naftzger's collection, then was sold in a 2009 Goldbergs auction for a whopping $57,500. Proof enough that it pays to attribute your coins.