The Medium O is a plentiful variety for the 1842-O Seated dime in lower circulated grades. At or above the EF level, Greer opines that the Medium O is an undervalued variety in this series. Lightly worn across the high points of the design, this bright example exhibits virtually no patina. The strike is typically soft at the upper obverse and lower left reverse, but the remaining detail is suitably bold for an O-Mint dime that has seen 5 points of circulation. Some of the original satiny luster remains and most of the scattered marks and abrasions are inconspicuous. As an issue, the '42-O is quite scarce in higher grades since many of the 2 million coins produced have been lost to time.