ΘΕΣΣΑΛΟΝΙΚΗ*15.VIII.52 first flight to "ΜΥΤΙΛΙΝΗ*15.ΑΥΓ.52" by TAE, commemorative canc. "TAE*ΠΡΩΤΗ ΠΤΗΣΙΣ ΘΕΣ/ΝΙΚΗΣ-ΜΥΤΙΛΗΝΗΣ*15 ΑΥΓΟΥΣΤΟΥ 1952" in blue on official cover. (Hellas FF470).