CAR . THEOD . D . G . C . P . R . V . B . D . S . R . I . A . & EL . D . I . C . M.
Reverse -
Bavarian coat-of-arms, surrounded by a half wreath.
Legend,
PATRONA BAVARIAE
Exergue,
17 20 89.
Size, 29 mm.
According to Wikipedia, "Karl Theodor (born in 1724) reigned as Elector and Prince of the Palatinate from 1742 until his death 1799, and also as Duke of Bavaria from 1777 (until his death in 1799)."