1957 Maserati 250S Spyer

After the first 200S models arrived in the United States some owners wanted more power, prompting Maserati to develop a larger 2.5-liter engine. The 2.5-liter prototype was the 200S chassis 2409 tested at the 12 Hours of Sebring. The car's impressive performance prompted some customers to request an upgrade but the factory itself converted only one more 200S to 2.5-liter specification (2411).

This car (chassis umber 2431) was completed on December 31st of 1957, as the first proper factory 250S built, and was delivered to the Texas dealership of Hall & Shelby, as in sports racing driver Carroll Shelby and Dick Hall, brother of the future Chaparral founder, Jim Hall. This car was immediately transported to its first race at Eagle Mountain that January, where Shelby drove but was unable to finish. In March, at Mansfield, Hall arrived with 2431 and its sister car, 2432, both of which were on the grid for the two days of racing.