P52 Antique Japanese Advertising Poster – Osaka Broadcasting Station (大阪放送局 / JOBK), Family Listening to Radio, Pre-War Japan, c. Late 1920s–Early 1930s

Striking and rare Japanese advertising poster promoting the Osaka Broadcasting Station (大阪放送局 / JOBK), dating from pre-war Japan, circa late 1920s–early 1930s, from the very early era of radio broadcasting in Japan.

The composition depicts a warm, lively multi-generational family scene gathered around a large “morning glory” horn loudspeaker. A mother and father sit in the foreground while children and other family members lean forward with excitement, all listening intently to the broadcast. The scene beautifully captures the novelty and communal experience of radio as a new mass medium during the Taishō to early Shōwa period.

The design reflects the optimism and modern spirit of early Shōwa Japan, when radio was transforming everyday life and connecting people to the wider world. The illustration style blends Shin-hanga–influenced painterly realism with early modern graphic design, combining traditional Japanese family values with the excitement of new Western technology.

At the top appears the station emblem with the call sign “JOBK.” At the bottom, the bold orange text reads “Osaka Broadcasting Station” (大阪放送局), identifying this as an official promotional poster. The text also lists the station’s location in the Dojima Building (堂島ビルヂング) along with its telephone number, emphasizing the modern, urban identity of broadcasting at the time.

The Osaka Broadcasting Station was the predecessor of today’s NHK Osaka, and posters like this were used to promote broadcasting services, radio ownership, and listening habits at a time when radio was still a relatively new and exciting technology.

This is an outstanding and rare surviving example of early Japanese media and technology advertising, documenting the birth of mass communication culture in Japan.

Subject: Multi-generational family listening to radio, early broadcasting culture
Institution: Osaka Broadcasting Station (大阪放送局 / JOBK), predecessor of NHK Osaka
Period: Pre-war Japan, late 1920s–early 1930s (Taishō – early Shōwa)
Technique: Lithographic advertising poster
Country: Japan
Size: Approximately 53 × 77 cm
Condition: Original vintage poster with visible age-related wear, creases, edge wear, small tears and losses consistent with age