The Selex company, based in Barcelona, built their first F3 car in 1969, the ST2, although it wasn’t raced until 1970 when it was driven by Salvador Cañellas. Selex continued to produce the occasional F3 chassis up until 1983 (although this last F3 car was called an Avidesa q.v.). However most of their cars were for the national Spanish series, SEAT Formula 1430 and the 1.8-litre Formula Nacional, eventually by the late 1980’s Selex had switched to the construction of specialist shock absorbers.