Denmark has issued stamps since 1851. The first person to be featured on a Danish stamp was King Christian IX. The years appearing after each name refer to when that person was first featured on a stamp.
... 11 - Sir Keith Holyoake, New Zealand Prime Minister (1960-1972)
February 20 - Alexei Kosygin[?], Premier of the Soviet Union[?] (+ 1980)
February 25 - Adelle ...