Large official envelope handwritten "Ministere de lInterieur", fr. with 40l rose-red on greysih lilac (stamp very fine) and 5l green tied by "1" cds and canc. "ΑΘΗΝΑΙ*18.ΑΥΓ.66" to Constantinople. Cachet "ΠΕΔ", on reverse Piraeus transit postmark and waxseal on flap "Ο ΥΠΟΥΡΓΟΣ ΤΩΝ ΕΣΩΤΕΡΙΚΩΝ". Very fine and very rare since very few 40l. rose-red stamps are known on cover. A great rarity. (Hellas 20IIb).