Poland - 20 Groszy - 1991 - Period : Third Republic (1990-2013) - Weight 3,22 gr - Copper-Nickel - Size 18,5 mm - Thickness 1,6 mm - Alignment Medal (0°) - Engraver Obverse : Stanislawa Watróbska-Frindt - Engraver Reverse : Ewa Tyc-Karpinska - Mint : Warsaw-Poland - Edge Milled -Mintage 75 400 000 - Reference Y# 280 (1990-2013)