01 / 0250 Kčs 1977 - Ján Kollár, PROOF — image 1 of 22x1x01 / 02SpecificationsMetalStříbroFineness700/1000Weight13 gDiameter31 mmFace value50 KčsYear of issue1977FinishPROOFIssuerČeskoslovenskoDesignerAndrej PeterCountry of originČeskoslovenskotémaJán Kollár