OSCA
After the Maserati brothers contract came to an end with Orsi, the remaining Maserati brothers started in car production in Bologna under the OSCA name in 1947, OSCA standing for Officina Specializzato Costruzione Automobili, focusing on competition cars - whether sportscars such as MT4 (1100cc and eventually 1500cc) and later Tipo S. There were also the 2 litre Formula 2, and F1cars, many of which were later converted to sportscars.
OSCA also produced some road cars, notably the OSCA Fiats, and the OSCA1600GT. The OSCA name continued to 1967.