Entire letter fr. with 10l. orange + 40l. mauve on blue canc. dot. "95" and "ΚΩΝΣΤΑΝΤΙΝ (ΤΟΥΡΚΙΑ)*28.ΑΥΓ.64", arr. "ΑΘΗΝΑΙ*31.ΑΥΓ.64". On reverse Piraeus transit postmark. Fine. (Hellas 18b+20Ib).