Prior to the 1954 season six works Ferrari 500 car were modified by Scuderia to 625 specification to correspond to the new 2.5 litres Formula. Few privateer’s Ferrari were subjected to the same update. Among those private Ferrari entrants was Ecurie Rosier, racing team created by Louis Rosier to enter his own cars in Formula One between 1950 and his death in 1956. Commonly the vehicles were entered for Rosier himself, but he also provided cars for a number of other drivers during the period. In 1954 Rosier ran two cars – one for him, and another was driven by Maurice Trintignant and, mostly, by Robert Manzon. Manzon, one of the best French pilots of the 1950s, is best known for his alliance with the Gordini team, where he raced since 1948. The 1953 was his only season with Ecurie Rosier. He achieved his best result of the season in French Grand Prix at Reims where Manzon finished third behind two Mercedes-Benz cars by Juan Manuel Fangio and Karl Kling. Robert took over third place from Prince Bira on the very last lap of the race.
| Season | Series | Event |
| 1954 | F1WC | French GP |
| Driver | No. | Entrant |
| Robert Manzon | 34 | Ecurie Rosier |
| Scale | Manufacturer | Collection |
| 1:43 | IXO | Fabbri Ferrari F1 Collection |
| Cat. No. | Quality | Rarity |
| No. 31 | 
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