Saxe - Weimar - Eisenach - 1813

1/24 Thaler
Obverse - Saxe - Weimar - Eisenach - 1799 Reverse - Saxe - Weimar - Eisenach - 1799
Obverse - Coat of Arms on a shield.
Legend, S. W. U. E.
Reverse - 24 EINEN THALER S M. 1813
 
Carl August was the Duke from 1775 until 1830 (Krause says 1828).