Registered cover franked with 3 lep. x10 "Eλληνική Διοίκησις" black overprint (one with large "E") and cancelled with "ΛΙΜΗΝ ΣΗΤΕΙΑΣ 19 AYΓ.1915", via "HΡΑΚΛΕΙΟΝ ΣΥΣΤΗΜΕΝΑ 20 ΑΥΓ.1915". Arrival "AΘΗΝΑΙ (ΑΦΙΞΙΣ) 22-ΑΥΓ.15"