Refrigerator magnet pictures an illustration from vintage advertisement for the 1947 Plymouth. In 1947 the manufacturer (Chrysler) emphasize bang for the buck, positioning the Plymouth as an economy car with the most features. Among them: performance, riding comfort and safety. There were two blue models offered on 1947 Plymouths, Chevron Blue and Marine Blue. This illustration was rendered to suggest either but to me it leans to Marine Blue.