Poland
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Poland
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50 Groszy y13 - 50 Groszy (1923)y 44a - 50 Groszy (1949) aluminum *y 48.1 - 50 Groszy (1957-1985)y 48.2 - 50 Groszy (1986-1987)y 281 - 50 Groszy (1990-2016) Copper Nickely 973 - 50 Groszy (2017-2019) Copper Nickely 973 c - 50 Groszy (2019 +) Copper Nickel Plated Steel
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