This 40 Lepta definitive stamp of Greece features a finely engraved Byzantine-style seated figure within a textured oval field, part of the mid-20th-century classical-inspired issues. Your example bears the bold black overprint ΕΛΛΗΝΙΚΗ ΔΙΟΙΚΗΣΙΣ (“Hellenic Administration”), used by Greek authorities during periods of administrative control in the Dodecanese after World War II. The combination of green denomination lettering and the crisp line-engraved background gives it strong typographic contrast. Overprinted issues of this type are sought after for their transitional postal history, representing Greece’s administrative authority prior to full political integration of the islands. A clean, well-centered example like yours adds strong thematic value to collections of Greek regional issues and postwar provisional overprints.