The 45c stamp was issued in 2010 to celebrate 200 years of Natural History Museum in Berlin.
This is the largest museum of natural history in Germany, and was established in 1810. Its collections contain objects from three major fields, paleontology, mineralogy, and zoology. It is most famous for two spectacular exhibits: the largest mounted dinosaur in the world, and the most exquisitely preserved specimen of the earliest known bird, Archaeopteryx.
The 170c stamp was issued in 2009 commemorating 175th birthday of Gottlieb Daimler.
Gottlieb Daimler (1834 – 1900) was an engineer, industrial designer and industrialist, born in Schorndorf , Württemberg. He was a pioneer of internal-combustion engines and automobile development. He invented the first high-speed petrol engine and the first four-wheel automobile.
Daimler and his lifelong business partner Wilhelm Maybach were two inventors whose dream was to create small, high speed engines to be mounted in any kind of locomotion device. They designed in 1885 a precursor of the modern petrol engine which they subsequently fitted to a two-wheeler, considered the first motorcycle and, in the next year, to a stagecoach, and a boat. They are renowned as the designers of this Grandfather Clock engine.
Later, in 1890, they founded Daimler Motoren Gesellschaft (DMG). They sold their first automobile in 1892. Daimler fell ill taking a break from the company and upon his return experienced difficulty with the other stock holders that led to his resignation in 1893 that was reversed in 1894. Soon Maybach resigned also and he returned at the same time as Daimler. In 1900 Daimler died and Wilhelm Maybach quit DMG in 1907. In 1924, the DMG management signed a long term co-operation agreement with Karl Benz's Benz & Cie., and in 1926 the two companies merged to become Daimler-Benz AG, which is now part of Daimler AG.