This June 4, 1967 stamp (Facit #630) of Finland commemorates the centenary of the birth of Gustaf Mannerheim (1867-1951).
From wikipedia, "A bronze equestrian statue of Marshall of Finland, Carl Gustaf Emil Mannerheim by Emil Tukiainen, stands in the center of Helsinki. It was erected in 1960. The bronze statue is 5.4 meters tall. It is raised on a granite podium 6.3 meters tall, 6.3 meters long and 2.72 meters wide."