This Japanese chromolithograph postcard was published by Theodore Stroefer of Nuremburg, Bavaria, circa 1903. I can't read Japanese characters but from an extensive online search, I believe this is a Kabuki actor print by the artist Kunisada, also known as Toyokuni III.* According to a Japanese museum I found online, this is a scene from a play produced in 1847. This card is unused and aside from minute wear on the corner tips, it is in overall mint condition. Size: about 3.5 by 5.5 inches. This card is Serie 398 (8 Dess.) No. 2. Number 5 in this series is listed separately here: http://www.rubylane.com/item/274812-7569/Antique-Japanese-Chromolithograph-Postcard-two
*From Wikipedia: "Utagawa Kunisada (Japanese: 歌川 国貞; also known as Utagawa Toyokuni III (三代歌川豊国); 1786 – 12 January 1865) was the most popular, prolific and financially successful designer of ukiyo-e woodblock prints in 19th-century Japan."