Background
Hiromasa Seki was born in 1904 in Tokyo.
Hiromasa Seki was born in 1904 in Tokyo.
He graduated from Tokyo University of Commerce (1925).
Entered the service of Banque Franco-Japonais and after two years resigned to join the New York National City Bank (1927). Joined Hakuhodo Advertising Agency (1931), becoming vice-president (1945).