Air-mail registered cover posted from "ATHINAI*28.III.40" with 3-line "ΚΕΝΤΡ.ΤΑΧ.ΑΘΗΝΩΝ/ΕΛΕΓΧΟΣ ΓΡΑΜΜΑΤΟΣΗΜΟΥ/ο ελέγξας" (type 7, Nr.137) exchange control cachet in violet colour and censors signature to New York.