| Full name: | Officine Specializzate Costruzioni Automobili |
| Active years: | 1951 – 1953, 1958 (4) |
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| Rd | Date | Grand Prix | Driver | Car | Engine | Grid | Race | Pts |
| 1 | 27 May | Switzerland | ||||||
| 2 | 30 May | Indy 500 | ||||||
| 3 | 17 Jun | Belgium | ||||||
| 4 | 1 Jul | France | ||||||
| 5 | 14 Jul | Great Britain | ||||||
| 6 | 29 Jul | Germany | ||||||
| 7 | 16 Sep | Italy | Franco Rol | 4500G | OSCA | 18 | 9 | 0 |
| 8 | 28 Oct | Spain |