A rare coin minted by King Frederick II William of Prussia on the model of the orts of August III, but under his own marks.
Minted most likely for trade with Poland.
Silver, diameter 27 mm, weight 5.73 g.
Obverse: bust of Frederick II to the right, in the rim the legend FRIDERICUS BORUSSORUM REX;
Reverse: crowned five-field shield with the coats of arms of Prussia, Pomerania and the coat of arms of Frederick II, below it the value mark 18 and the letter B, in the rim the legend: MONETA AR-GENTEA 1755
