8. Duesenberg SJ Convertible Coupe – $4.51 Million
Another Duesenberg from the similar time period is the SJ Convertible Coupe. However, it came with slightly different mechanicals and a more formal body. The SJ Convertible Coupe was an elegant roadster and one of just three they made. However, what makes this one so special and expensive is the fact that this is the only one with a supercharger straight from the factory. Also, the first owner was William Lyons, the man behind the Jaguar Car Company.