Example of air mail adopted drawing (France, 1946) realized on cardboard with watercolor by Pierre Gandon; it represent a mythological allegory (cart of the sun); every detail of this drawing it will be reproduced in the definitive stamp, to exception of the fact that the drawing is polychrome, while the stamp is monochrome (vermilion red) (you see fig. B2a). 

fig. B2

Definitive issued stamp (France, 1946) drawned and engraved by Pierre Gandon. 

fig. B2a