Piasts, Boleslaw II the Bold (1058-1080), denarius - prince on horseback with spear, CROSS.
Coin type probably minted at the end of the reign, from inferior silver
obverse: figure of a prince on a horse holding a spear pointing to the left along the horse's neck, behind the figure of the prince the mint mark - the CROSS
reverse: duke's head in smaller pearl surround and inscription in outer pearl surround with drops and additional pearl surround
silver, weight 0.52 grams, diameter 14.2 mm
