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Coat of arms of Württemberg, value
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The ⅔ thaler coin is a circulation coin that was issued by the Duchy of Württemberg in 1759, during the reign of Duke Charles Eugene (German: Karl Eugen; 1728–1793). It had a value equivalent to two thirds of a conventionsthaler, or 1.6 gulden.
The coin is composed of silver and has an average mass of 12.8 grams. Featured on the obverse is a right-facing armored bust of Duke Charles Eugene. This depiction is accompanied by the Latin legend "CAROLVS D: G: DVX WURT: & T:", a shortened form of Carolus Dei Gratia Ducis Württemberg et Teck, which translates to English as "Charles, by the Grace of God, Duke of Württemberg and Teck". This text starts at the left periphery of the coin and extends upward until reaching the top of the portrait of the duke. From there it is separated between the "D:" and "G:" and arches downward along the right rim. Displayed in the center of the reverse is the coat of arms of Württemberg used by Charles Eugune – which consists of the arms of Württemberg with the three antlers in the center of an escutcheon, partially overlapping the arms of the Dukes of Teck at the upper left, an element showing the flag of the Holy Roman Empire at the upper right, the arms of the County of Montbéliard at the bottom left, and the arms of Heidenheim an der Brenz at the bottom right. The escutcheon is surrounded by a cloak and surmounted by a crown. The Latin motto "PROVIDE ET CONSTANTER", which could translate as "Prudently and Consistently", is printed along the rim of the coin, starting at the left side and being separated at the top of the piece by the crown in the arms between "ET" and "CONSTANTER". Printed in a circular frame at the very bottom of the reverse is the fraction , which signifies the coin's value of ⅔ of a thaler.