Carrozzeria Castagna, founded in 1849 by Carlo Castagna in Milan, Italy, is a renowned coachbuilding company specializing in custom-built vehicles. Historically, the company has collaborated with prestigious automobile manufacturers such as Isotta Fraschini, Alfa Romeo, Lancia, Mercedes-Benz, and Duesenberg, producing bespoke bodies for luxury cars. Notable models include the 1913 Alfa Romeo 40/60 HP Aerodinamica, the 1928 Isotta Fraschini Imperial Landaulet , and the 1939 Alfa Romeo 6C Castagna Berlinetta.…