1837 - 1891

Christian Gobrecht completed the design of this dime, whose obverse was used with every circulating silver U.S. coin of the period. Mint Director Robert Maskell Patterson requested a new coin design, to be reminiscent of the Britannia image found on coinage of the United Kingdom. Chief Engraver William Kneass drew the original sketches, but suffered a stroke and was too ill to finish them or to oversee preparation of the dies. The task then fell to Gobrecht, who was promoted to Second Engraver.[14]

The obverse features an image of Liberty sitting on a rock, wearing a dress and holding a staff with a cap on top. Her right hand is balancing a shield with the inscription of "LIBERTY." The reverse featured the inscription "ONE DIME," surrounded by a wreath. All Seated Liberty dimes contain 90 percent silver and 10 percent copper, and are 17.9 millimeters (0.705 inches) in diameter. This size and metal composition would continue until 1965, when silver was permanently removed from circulating dimes.

There were several minor varieties during the Seated Liberty's run. The initial design (1837) had no stars on the obverse. Thirteen stars (symbolizing the thirteen original colonies) were added to the perimeter of the obverse in 1838. These were replaced with the legend "United States of America," which was moved from the reverse in mid-1860. At the same time, the laurel wreath on the reverse was changed to a wreath of corn, wheat, maple, and oak leaves and expanded nearly to the rim of the coin. This reverse design continued through the end of the series in 1891 and was changed only slightly in 1892, when the Barber dime debuted. Another variety is the 1838–40 dime minted with no drapery underneath the left elbow of Liberty.[9]

Arrows at the date in 1853 and 1873 indicated changes made in the coin's mass (from 2.67 grams to 2.49 grams in 1853, then to 2.50 grams in 1873). The first change was made in response to rising silver prices, while the latter alteration was brought about by the Mint Act of 1873 which, in an attempt to make U.S. coinage the currency of the world, added a small amount of mass to the dime, quarter, and half-dollar in order to bring their weights in line with fractions of the French 5-franc piece.