The last year of thalers of the Duchy of Warsaw, with the initials I-B Jakub Benicke.
Obverse: prince's head to the right
FRID AVG REX SAX DVX VARSOV
Reverse: crowned shield with the coats of arms of Poland and Saxony, a wreath of palm branches on the sides of the shield, at the bottom the initials I-B Jakub Benicke and the inscription TALAR, at the top the date
Diameter 39 mm, weight 22.75 g
