Set of 5 thousand with discoloration of the denomination marking in the lower left corner on the obverse. Discoloration only one-sided, the banknote does not bear any signs of manipulation or chemical treatment so it is very possible that it is a printing destruct, the effect of missing one of the pigments ?
- 20 zloty st.1-, trace of pasting; SPECIMEN imprint / 25 years of NBP
- 1,000 zl 1975 st.3+;
- 5,000 zl 1988 st.4+