There were three Imperial models in this generation. The C-14 was the standard eight and looked much like the Chrysler Royal C-18 with a longer hood and cowl. The C-15 was the Imperial Custom and the Town Sedan Limousine, with blind rear quarter panels. This model was available by special order. The third model, C-17, was the designation for the Airflow model. They had a concealed crank for raising the windshield and the hood was hinged at the cowl and opened from the front; side hood panels were released by catches on the inside. An Imperial Custom convertible sedan was used as an official car at the Indy 500. The car pictured is J.G. Martin's (retired airline mechanic) 1939 C-24 7-passenger limousine, believed by him and his son Tim to be the only 1939 production 7-passenger limo still on the road.