Commemorative stamp series - Germany / German Democratic Republic 1979 - 25 Pfennig

Important personalities, issue 1979 With the illustrations of important personalities, the Ministry of Posts and Telecommunications of the German Democratic Republic issues six special postage stamps. No special First Day Cover Special cancellation from March 20 to May 19, 1979 Important personalities 25-pfennig value: August Kekulé (v. Stradonitz) (September 7, 1892 to July 13, 1896) 1856 Privatdozent at the University of Heidelberg, 1858 Professor of Chemistry at the University of Ghent and 1868 Professor of Chemistry at the University of Bonn is one of the outstanding German chemists of the 19th century. Kekulé, who belonged to the Berlin Academy, today's Academy of Sciences of the GDR, since 1875 as a Corresponding Member, since 1885 as an External Member, is the creator of the theory of benzene. With this scientific success of epoch-making effect, he opened up a wide range of natural and artificial organic compounds to experimental research, thus contributing to the rapid advancement of chemical engineering, especially the tar-paint and pharmaceutical industries. The drawing on the special postal stamp represents the equilateral hexagon as the formula of the benzene ring.