Founded in Barcelona in 1904, the firm’s technical director was Swiss engineer and designer Marc Birkigt, hence the “Suiza” part of the company name.  Cars were principally built for the luxury market, although a 1908 T.15 “sports car” was bought by King Alfonso XIII and subsequently named after him.  By 1923 the company was building about 600 vehicles a year, but by 1938 only a few of these were passenger cars as commercial vehicles dominated.  The company closed for car production in 1944.