The Model SJ, the supercharged version of the J, debuted in 1932, and originally featured a set of eight separate hard pipes. The car was designed to compete with the largest and most luxurious European cars of the era. This fine silver coin is dated 2003.

Supercharged Duesenbergs were speed machines. Thanks to a centrifugal, gear-driven supercharger, the vehicle was capable of a top speed of 135 to 140 mph in third gear, at a time when even the best cars of the era were not likely to reach 100 MPH. This speed was even more impressive, considering Duesenbergs generally weighed around two and a half tons. At $8,500 for the chassis alone, Dusenbergs were by far the most expensive car in the United States at the time. With coachwork, the final price of many Duesenbergs was near $20,000. The SJ was sold until 1937.