@ARTICLE{Śnieżko_Grzegorz_Counterfeits_2012, author={Śnieżko, Grzegorz}, number={No 2 (194)}, journal={Wiadomości Numizmatyczne}, pages={193-236}, howpublished={online}, year={2012}, publisher={Komitet Nauk Historycznych PAN}, abstract={Common counterfeits of small copper shillings of King John Casimir, originally coined between the years 1659 and 1666, were researched reluctantly. The 17'hcentury hoard from Idźki-Wykno (Wysokie Mazowieckie County, Podlaskie Voivodeship), uncovered in 1969 gave us a new opportunity to take up this issue, thanks to its large representation of counterfeits.}, type={Artykuły / Articles}, title={Counterfeits of small copper shillings of King John Casimir from the Idźki- Wykno hoard}, URL={http://ochroma.man.poznan.pl/Content/120741/PDF-MASTER/5_ROK%20LVI_Sniezko_Falszerstwa.pdf}, }