Motorcycle designed and built in 1950 by Felice Rota with an OHV 500cc engine. There was also a sport version capable of 140 km/h and a racing version which could achieve 165 km/h. All had four-speed gearboxes.
A machine described as "Officine Meccaniche Rota - Rondine SS - 500 cc" was put up for auction by Barnebys.it in late 2019.
Sources: MC Storico Conti et al