Technological acceptance with zero numbering printed on paper without watermark.
A similar item is described in Cz. Miłczak's catalog (Warsaw 2023) on page 342, but there as single-sided prints, with different series marking and numbering.
The present one, according to our assessment, in a version consistent with the final approved one (we do not notice any differences). Interestingly, the series shows adaptation to 3-digit numbering, such as realized in practice only for denominations up to 5 zlotys. For 20 zlotys unknown.
Condition of preservation without any remarks.
Most likely a unique item. An item so far not described in the literature, known to us only from this piece.
