Airmail cover fr. with 6x1F 1934 airmail and 75c 1931 definitives Belgian Congo canc. "BUTA*31.8.39", arr. "ATHINAI*4.IX.39" and part of slogan "ΖΗΤΩ (Η 4η) ΑΥΓΟΥΣ(ΤΟΥ)". (Mi.137+148).