Proof print of an unrealized issue of the Polish Cities series.
The PLN 1,000 denomination from the advanced stage of preparation, printed in large format ~157 x 74 mm and on paper with a current watermark.
The PLN 1,000 was the only denomination from the projected series to advance to this stage. The realization of the lower denominations was completed at the stage of small format and printing on paper without watermarks.
