In 1942, Manuel and Ernesto Giró presented to the "Feria de Muestras de Barcelona" the first OSSA motorcycle. It was a 125 cc , two stroke Villers engine. Unfortunatley, this prototype had never seen the road. Seven years later, in 1949, a new 125 OSSA had been presented in the same Barcelona, and the first bike was sold in 1951.