A nice piece.
Obverse: in the pearl rim bust of the ruler to the right, in the rim legend:
D:G-LUDOVICUS-DUX(XV)SIL-L-B-& GOLDB-;
Reverse: in the pearl rim a Silesian eagle, in the outer rim a legend punctuated by a mint mark:
*MONETA NOVA-ARGENTEA 1663;