Poland - 1 Grosz - 2012 - Third Republic (1990-2013) - Weight 1,64 gr - Manganic Brass - Size 15,5 mm - Thickness 1,2 mm - Alignment Medal (0°) - Engraver Obverse: Stanislawa Watróbska-Frindt - Engraver Reverse: Ewa Tyc-Karpinska - Mint Warsaw-Poland - Edge Milled - Mintage 365 000 000 - Reference Y# 276 (1990-2013)