1 Drachma (1967) (type I) in silver. Head of King Constantine II facing left and inscription "ΚΩΝCΤΑΝΤΙΝΟC ΒΑCΙΛΕΥC ΤΩΝ ΕΛΛΗΝΩΝ" on obverse. Inside slab by NGC "MINT ERROR AU 58 / STRUCK ON FOREIGN PLANCHT". Very interesting coin, supposed to be part of the silver proof set struck for gift and presentation reason, but there is a problematic strike on the left part of the coin which justifies the use of mint error record by NGC. Cert number: 1828542-001. (Hellas T.141b).