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| Issuer | Narodowy Bank Polski (National Bank of Poland) |
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| Year | 2012-2016 |
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| Composition | Log in to see details |
| Size | 126 × 63 mm |
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| Obverse description | Intaglio portrait of King Bolesław I Chrobry (the Brave), first King of Poland, in right-facing profile at centre-right, rendered within a circular coin-like vignette with his name inscribed along the arc. To the left, the Polish eagle underprint appears beneath the issuer inscription NARODOWY BANK POLSKI, with the date WARSZAWA 5 STYCZNIA 2012 r. and two facsimile signatures below; the denomination numeral 20 appears in large letterpress at left and upper right, with guilloche underprints and a colour-shifting oval security element to the right of the portrait. |
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| Reverse lettering | NARODOWY BANK POLSKI 20 BANKNOTY EMITOWANE PRZEZ NARODOWY BANK POLSKI SĄ PRAWNYM ŚRODKIEM PŁATNICZYM W POLSCE 20 DWADZIEŚCIA ZŁOTYCH NBP PWPW (Translation: National Bank of Poland 20 Banknotes issued by National Bank of Poland are a legal means of payment in Poland 20 Twenty Zlotys NBP) |
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| Comments |
Andrzej Heidrich designed Polish banknotes for over five decades, and this 20 Złotych belongs to the series he refined across multiple update cycles — the same basic architecture had been in continuous production since the early 1990s, with incremental security upgrades added rather than full redesigns. The colour-shifting ink was introduced to counter increasingly sophisticated counterfeiting that plagued the earlier polymer-free issues.
The engraver credit to J. Moore is an inherited element from earlier plate work, not necessarily a Warsaw commission.