A nice, glossy piece. Well preserved details.
A variant with the initials TLB and the Slepowron coat of arms in a variant with the legend IO CASIM.
Obverse: in the pearl rim a royal bust wearing a crown, armor and cloak, with visible armor sleeve stripes, with the Order of the Golden Fleece, to the right, in the outer rim the legend:
○IO-CASIM-D-G-REX-POL-ET-SVE;
Reverse: in the pearl rim crowned with a crown of jewels in a closed rim, with 5 fleurons, a five-field shield with the coats of arms of the Crown of the Kingdom of Poland, the Grand Duchy of Lithuania and the Snopes coat of arms of the Vasa dynasty, on the sides of the shield the denomination mark I-8, in the outer rim the legend punctuated by the Ślepowron coat of arms and the initials T.L.B:
MON-ARGEN---REG-POL-1659;
