Poland
Republic silver Proof Proba "Year of the Child" 20 Zlotych 1979-MW PR68 Ultra Cameo NGC, Warsaw mint, KM-Pr341, Parchimowicz-311A. Mintage: 4,200.
https://coins.ha.com/itm/poland/poland-republic-silver-proof-proba-year-of-the-child-20-zlotych-1979-mw-pr68-ultra-cameo-ngc-/a/61294-25319.s?type=DA-DMC-CoinArchives-WorldCoins-61294-10302022
HID02906262019
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