He was a member of French National Centre for Scientific Research, École du Louvre and worked at the University of Nantes, Lille and Fribourg in Switzerland.
[2] In 1960 he became interested in both Hispanic and Catalan archaeology and by 1976 he became a professor at Paris-Sorbonne University where he taught Late Antiquity and Byzantinian Art in Middle Ages.
He worked there until 1992 and then became a member of Reial Acadèmia de Bones Lletres in Barcelona, Spain.
Since 1990, he focused himself on Augustan History and by 1994 he was awarded an honorary doctorate from the University of Geneva.
[3] Duval was elected as an emeritis professor fellow at the University of Paris in 2007.