Page "Officine Meccaniche" Paragraph 8

Further models were Tipo 465 ( with a 1327 cc four ) in 1919, Tipo 467 ( 1410cc ) and Tipo 469 ( 1496cc ) in 1921.

1923 saw an all new model, Tipo 665 ' Superba ' with a 2-litre six-cylinder engine.

This model was extremely successful in racing-won top five positions in the 2-litre class in 1925 and 1926 at Le Mans but the greatest achievement was the victory in the first Mille Miglia race in 1927 where Ferdinando Minoia and Giuseppe Morandi lead home an O. M.

' 123 ' at average speed of for 21 hours 4 minutes 48seconds.

Some cars were equipped with Roots superchargers.