A 1/2 mark Polish banknote from 1920, from the so-called "Vienna issue."
An original banknote with a secondary, double-sided "WZÓR" overprint, applied in the 1970s, known as the "Kamiński pattern"; this is not the original pattern from that era.
An attractive piece, confirmed by a high PMG grading, with an EPQ notation attesting to the exceptional quality of the paper.
References: Miłczak 30



