Fruit salad service from the 50s/60s

Set for fruit salad in enameled ceramic dating from the 50s/60s: it includes 1 salad bowl and 6 individual bowls. Each piece is enameled in a specific shade on the front and black on the back. No signature. Dimensions of a bowl 11x11cm X h 5cm. Dimensions of the hollow dish: 20.5 X 20.5 X h9.5cm. Very good general condition, note 1 small chip of enamel (restored therefore very discreet) on the edge of the green bowl and the yellow bowl (see photos annotated with circle).