Registered cover fr. with 2x25l. "ET" Litho posted from "ΑΘΗΝΑΙ (ΣΥΣΤΗΜΕΝΑ)*17 ΑΥΓ. 17" with censorship tape "CONTROLE POSTAL MILITAIRE" and oveal mark "OUVERT Par. LAUTORITE MILITAIRE*303" in black, arr. "RARIS*16 9 17".