Poland, John Casimir, the Crown, szóstak (sextuple groschen) 1659, Cracow mint.
Obv. ...SVE. Rv. rosette between shields, TL-B.
Silver, 3.42 g, 25.0 mm. Ciura 659K.1.1.2.1.
Grade: Near XF, beautifully minted and excellently preserved; sheet metal flaws on Rv.