Cover of August 1930 issue of magazine "Koku Jidai". Artwork by painter Suzuki Gyosui born 1898 in Akita prefecture and a graduate of the Tokorozawa Rikugun Hiko Gakko. In 1927 his artwork illustrated aviation stories in the magazine "King" and in 1929 contributed artwork in another magazine, "Shonen Club". A year later he dedicated himself in creating aviation subjects earning the nickname "Air Force Suzuki Gyosui". Died in 1982.
The aircraft on the cover is a Junkers F-13 seaplane with the registration J-BALG which according to the civilian register site belonged to Teikoku Kaibo Gikai, then to Nippon Koku KK until it crashed n March 1934.