Fałszerstwa szelągów Rzeczypospolitej z XVII wieku wykonane techniką walcową

Large-scale counterfeiting of base silver coins of the Polish-Lithuanian state in the seventeenth century, using the technology of minting machines which were modern in those times, makes it possible to attempt a relatively precise identification of counterfeiting workshops. The article is an attempt to inventory and determine the place of production of milled false shillings of Sigismund III (1587–1632) and John Casimir (1648–1668) preserved in collections.