A very nice piece.
A prized and relatively rare medal.
Weight 39g , diameter 41 mm.
Obverse: Bust of prince to the left, below signature, in the rim legend:
J Pce PONIATOWSKI MARECHAL DE FRANCE;
Reverse: In laurel and oak wreath inscription SMOLENSK/MOSKOWA/VACHAU/LEIPSICK/NE A VIENNE 1770/MORT EN 1813;