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THIS IS CZECH & SLOVAK FEDERATIVE REPUBLIC 1990 10 KORUN, T. G. Masaryk, UNC

Composition     Nickel brass
Weight     8 g
Diameter     24.5 mm
Thickness     2.5 mm
Shape     Round
Technique     Milled
Orientation     Medal alignment ↑↑
Demonetized     31 July 1993
References     KM# 138

YES WE DO COMBINE POSTAGE