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Poland. 10 Zlotych 2014, Bracteate of Mieszko III the Elder, History of Polish Coinage, by Dominika Karpinska-Kopiec, Parchimowicz 1315, KM Y# 909, Fischer: K(10) 164, Silver 32,0 mm, weight 14,14 g. .925, Condition Proof, coin in original NBP blister