50 Lepta (1970) (type I) in copper-nickel. Head of King Constantine II facing left and inscription "ΚΩΝCΤΑΝΤΙΝΟC ΒΑCΙΛΕΥC ΤΩΝ ΕΛΛΗΝΩΝ" on obverse. Inside slab by NGC "MINT ERROR AU 58 / CLASHED DIES / DEFECTIVE PLANCHET". Cert number: 5788693-006. (Hellas 217).