1967-F 5 Mk Humboldt J-395, DCAM PR67DCAM 认证号34491355, PCGS号417932

KM# 120.1 | J-395 | Commemorating the 200th birthday of Wilhelm von Humboldt, in memory of his brother Alexander von Humboldt Friedrich Wilhelm Heinrich Alexander von Humboldt (14 September 1769 – 6 May 1859) was a Prussian polymath, geographer, naturalist, explorer, and proponent of Romantic philosophy and science. He was the younger brother of the Prussian minister, philosopher, and linguist Wilhelm von Humboldt (1767–1835) Humboldt's quantitative work on botanical geography laid the foundation for the field of biogeography. Humboldt's advocacy of long-term systematic geophysical measurement laid the foundation for modern geomagnetic and meteorological monitoring.