Boratynka (boratynek) is a popular, unofficial name of a copper szeląg (shilling), minted in the Polish–Lithuanian Commonwealth in 1659–1668, during the reign of John II Casimir. Coin weighing 1-1,2 g, was minted by Tito Livio Burattini.[1] The name appeared in Polish numismatic literature in the second half of 19th century.
Boratynki were made both in Poland and in the Grand Duchy of Lithuania.[2] Polish boratynki were minted in Kraków and Ujazdów, while Lithuanian boratynki were minted in Vilnius, Kaunas and Malbork.