Poland NUMISMATIC LITERATURE 1847 Kazimierz Stronczynski - Money of the Piasts. From the earliest times to 1300; A selection of contemporary sources and excavations and a comparison of mint types explained; Warsaw July 1 1847; a very interesting book containing the analysis of Piast coins from the earliest times to 1300. At the beginning of the book there is a note with the names of the subscribers of this item. The main part is devoted to the descriptions of the coins and their drawings. In the rest there are; among others \ Mutual comparison of homonymous types; table showing the gradual change in weight and silver fineness of Piast coins