Jacques Cottin
Jacques Cottin was a French costume designer whose films included Jour de fête (1949), Mon oncle (1958), and Playtime (1967), for Jacques Tati. In 1970 he had a cameo in François Truffaut's Bed and Board, playing the character of Monsieur Hulot, made famous by Tati. Source: Article "Jacques Cottin" from Wikipedia in English, licensed under CC-BY-SA.
Filmography

Max and the Junkmen
as 'Napo' (uncredited)
Max and the Junkmen
as 'Napo' (uncredited)

Bed and Board
as Monsieur Hulot (uncredited)
Bed and Board
as Monsieur Hulot (uncredited)

Potatoes
as SNCF driver (uncredited)
Potatoes
as SNCF driver (uncredited)

Monsieur Hulot's Holiday
as Holidaymaker on Beach (uncredited)
Monsieur Hulot's Holiday
as Holidaymaker on Beach (uncredited)

Jour de Fête
as Brass Band Member in 'Bondu' Café (uncredited)
Jour de Fête
as Brass Band Member in 'Bondu' Café (uncredited)