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20 Zlotys Krzemionki Opatowskie
| Issuer | National Bank of Poland (Narodowy Bank Polski) |
|---|---|
| Year | 2012 |
| Type | Non-circulating coin |
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| Composition | Log in to see details |
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| Edge | Smooth |
| Mint | (MW) Mint of Poland (Mennica Polska),Warsaw, Poland (1766-date) |
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| Additional information |
Krzemionki Opatowskie is a Neolithic and Bronze Age flint-mining complex in the Świętokrzyskie region, active roughly between 3900 and 1600 BC, and among the best-preserved prehistoric extraction sites in Europe. The striped flint — krzemień pasiasty — quarried there was a prestige material traded across vast distances into central Europe. Incorporating an actual fragment of that same banded flint into the coin's composition makes this one of the more materially honest commemorative issues NBP has produced, the geological specimen doing work no inscription could.