Another already eighteenth coin from the "Treasures of Stanislaw August" series, which reproduces the famous eighteenth-century medal series with images of Polish kings commissioned by Stanisław August Poniatowski. This time the coin depicts John II Casimir Vasa, the Elected King of Poland and Grand Duke of Lithuania, son of Sigismund III. He briefly joined the Jesuit order, and in 1646 he even became a cardinal, but this did not prevent him from returning to the secular state. He was elected king in the fall of 1648 and elevated to the throne in January 1649, following the death of his older brother, Ladislaus. Four months after his coronation he married his brother's widow, Louise Maria Gonzaga. He ruled during the period of the Cossack uprisings (led by Bohdan Chmielnicki), the devastating Swedish Deluge (1655), which briefly forced him to flee the country, and the Polish-Russian War (1654-1667), which ended with the loss of large areas of the Grand Duchy of Lithuania. After the death of his wife he was the only king in the history of Poland who decided to voluntarily relinquish power. He abdicated in 1668 and left for France, where he became abbot of the monastery in Saint-Germain-des-Prés. On the reverse of the coin there is a bust of the king transferred from the medal (according to the painting by Marcello Bacciarelli). On the obverse of the coin we read a slightly shortened text from the reverse of the medal.