LOT 73

c.1957 Mondial 250cc Bialbero 4-valve Prototype Racing Motorcycle Registration no. unregistered Frame no. Unable to locate Engine no. 118

Sold for €19,550 inc. premium

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Lot 73

c.1957 Mondial 250cc Bialbero 4-valve Prototype Racing Motorcycle

Les Grandes Marques du Monde à Paris|6 February 2025, 13:00 CET|Paris, The Grand Palais Historique

c.1957 Mondial 250cc Bialbero 4-valve Prototype Racing Motorcycle
Registration no. unregistered
Frame no. Unable to locate
Engine no. 118

At the end of the 1957 season, Gilera, Moto Guzzi, and F.B. Mondial withdrew from Grand Prix racing, leaving the field open to MV Agusta. Had Mondial chosen to continue, it is possible it would have used machines based on this prototype. According to our vendor, the 250cc Mondial offered here is a works prototype built in 1957 for the 1958 season by Nerio Biavati (formerly Mondial's chief mechanic) and Dino Gilli. The only one of its kind made, it features a bialbero (twin-cam) 4-valve cylinder head with gear-driven cams, designed by Biavati and machined from solid. This restored machine was formerly part of the Enrico Bernardi Museum collection in Italy. No Documents.

As with all Lots in the Sale, this Lot is sold 'as is/where is' and Bidders must satisfy themselves as to the provenance, condition, age, completeness and originality prior to bidding.

Footnotes

Mondial Bialbero 250 cc à 4 soupapes – Prototype de moto de course – circa 1957
Non immatriculée
Cadre : numéro non trouvé
Moteur n° 118

A la fin de la saison 1957, Gilera, Moto Guzzi et F.B. Mondial se retirèrent des Grands Prix et laissèrent le champ libre à MV Agusta. Si Mondial avait voulu poursuivre, il aurait peut-être utilisé des motos dérivées de ce prototype. Selon son vendeur, la Mondial 250 proposée ici est un prototype d'usine construit en 1957 pour la saison 1958 par Nerio Biavati, l'ancien chef mécanicien de Mondial, et Dino Gilli. Seul exemplaire de cette définition, elle est équipée d'une culasse bialbero (double arbre) à 4 soupapes et arbres à cames entraînés par engrenages, conçus par Biavati et usinés dans la masse. Cette moto, restaurée, a autrefois fait partie de la collection du musée italien Enrico Bernardi. Pas de documents disponibles.

De même que tous les lots de cette vente, ce lot est vendu "en l'état et à l'endroit où il se trouve" et les enchérisseurs doivent en vérifier la provenance, l'état, l'âge, la complétude et l'authenticité avant d'enchérir.

Additional information

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