- Born on January 22, 1919 in Paris
- Deceased on April 23, 2001 in Ville-d'Avray, at the age of 82 years
Parents
- Jean Michon-Coster (1883 - 1980), baron Coster
- Gabrielle Bossan (1883 - 1980)
Family
- Married with Mireille Devos (1916 - 2017), issuing
Private- Private
Distinctions
- chevalier de l'ordre de la Légion d'honneur
- commandeur de l'ordre national du Mérite
- croix de guerre 1939-1945