1975 AD., Germany, German Democratic Republic (GDR), Staatsbank der DDR, Berlin, 20 Mark, Pick 29b. AA 6128841 Obverse

State: Germany, German Democratic Republic (GDR)
Issuer: Staatsbank der DDR
Location of issue:
Date of issue: 1975 AD.,
Value: 20 Mark der DDR
Size: 128 x 56 mm
Material: paper
Watermark: bust of Johann Wolfgang von Goethe
Serial : AA
Serial no. : 6128841 (7 narrow digits)
Signature: - (0)
Printer:
Obv.: / / / …. , bust of Johann Wolfgang von Goethe.
Rev.: / / / …. , children in front of a school.
References: World Paper Money P-29b .

Johann Wolfgang von Goethe (28 August 1749 – 22 March 1832) was a German writer and statesman. His works include: four novels; epic and lyric poetry; prose and verse dramas; memoirs; an autobiography; literary and aesthetic criticism; and treatises on botany, anatomy, and colour. In addition, numerous literary and scientific fragments, more than 10,000 letters, and nearly 3,000 drawings by him have survived. He is considered the greatest German literary figure of the modern era. A literary celebrity by the age of 25, Goethe was ennobled by the Duke of Saxe-Weimar, Karl August, in 1782 after taking up residence in Weimar in November 1775 following the success of his first novel, The Sorrows of Young Werther (1774).

More on https://en.wikipedia.org/wiki/Johann_Wolfgang_von_Goethe