Looks like a 1 pfenning during the reign of Maximilian III or IV, Joseph with the Wittelsbach Arms on the reverse side.
The reverse is sometimes described as the Bavarian diamond crest of the House of Wittelsbach, while the obverse may be
Karl II, Philipp Theodor (1777-1799). What makes the coin interesting (to me, anyway) is the split in the spelling of the word pfen--ning.
Don.....