PWPW, Polish Bison 2019, a set of POTENTIAL BIRDS with 9 test bills, UNC
BANKNOTES
A set of 9 varieties of promotional banknote of the Polish Security Printing Works,
where the main theme is Polish bison. The complete set includes banknotes
of different series, differing in the characteristics of the substrate, a full cross-section from classic paper
cotton to polymer. Banknotes in the original PWPW folder "Power of the substrate" in Polish,
detailing the security features and characteristics of the substrate on which the banknotes were printed.
