Yusei Jigyocho Stampf of Post Master affixed to Postcard of Empress Teimei

YUSEI JIGYOCHO (Japan Postal Agency) issued on 20 June 1927 a commemorative stamp of Baron Maejima Hisoka, founder of the Japanese Postal System. It carried a value of 1½ Japanese sen. The method of printing was offset lithography in a dull claret colour. It measured 26 x 30 mm and had a print run of 2,717,000 stamps.

Baron Maejima Hisoka  (1835 – 1919), born Ueno Fusagor, was a Japanese statesman, politician, and businessman in Meiji-period Japan. Maejima founded the Japanese postal service, and is known as Yūbin Seido no Chichi, or "Father of the Postal System".

Appointed to the Ministry for Popular Affairs in 1870 Baron Maejima would establish Japan’s postal system in 1877. Later, as Vice-Minister of Communications, the baron also established Japan’s state-owned telephone service in 1890, making the telephone available to businesses and the general public.

The  postcard depicts Sadako Kujō (Kujō Sadako, 1884 – 1951), posthumously honoured as Empress Teimei (Teimei-kōgō), was the wife of Emperor Taishō and the mother of Emperor Shōwa (Hirohito) of Japan. Her posthumous name, Teimei, means "enlightened constancy". This official photo was taken in 1912.