A nice piece.
Variety with a flower above the shield and two "I" letters instead of M in the legend. Item rarely listed in the trade.
Obverse: shield of the Grand Master, in the rim the legend:
IIAGS-LVDW-ICVS-PRIII;
Reverse: shield of the Order, in the rim legend:
IIONE-TA DN-ORVM-PRVC
Silver, diameter 20 mm, weight 1.43 g.