10 Drachmas (1976) (type I) in copper-nickel. Atom and inscription "ΕΛΛΗΝΙΚΗ ΔΗΜΟΚΡΑΤΙΑ" on obverse. Head of Democritos facing left on reverse. Variety: Atom electrons are at the same level as their orbital rings. Inside slab by NGC "MS 67 / Hellas #298b". Top pop in both companies with this variety. Cert number: 6632572-010. (Hellas 298b).