This type of body, where the top could be rolled down, was called a Cabriolet Limousine, which originated in Germany and was very popular in the 1930s. The Amilcar Compound, designed by Jean-Albert Grégoire, was the first production car with a cast aluminum frame. This along with the Tracta front wheel drive, rack-and-pinion steering, four wheel independent/torsion bar rear suspension, made it a very advanced car in 1938. From 1938-1941, 681 were produced.
The aluminum frame on our Amilcar is in perfect condition and does not show any corrosion, even after over 80 years.