5% PKO Proof of Savings for term savings deposit with discount
PLN 1,000
Date of contribution: July 18, 1975.
Proofs of this type were sold at a discount - when PKO issued the proof, its face value less the amount of interest for a period of 5 years, calculated at a rate of 5% per annum, was charged (in the case of a proof for the amount of 1,000 zlotys, it was 784 zlotys).
A very rare security of the communist period, until now unlisted on OneBid.
This exact piece is illustrated in J. Mazur's Catalog on page 394 (Volume II, Part 2).
Highly recommended!