Founded in 1922 in Milan, engineer Fausto Alberti's factory specialised in the manufacture of industrial engines and out board motors before producing its first motorcycle under the Sertum brand name - a 175cc single-cylinder four-stroke - in 1932. Many types of machine were made during the 1930s, ranging from a humble 120cc two-stroke single to a sturdy 500cc unitary construction sidevalve twin. Sertums competed in many endurance trials, including the ISDT, proving quite successful in this role, and contracts were secured for the supply of machines to the Italian Army. Despite a reputation for first class quality, Sertum stopped production in 1952, its new models having failed to catch the imagination of the public, which was more interested in mopeds and scooters. The 250cc single-cylinder overhead valve VT4 model offered here is typical strongly built and well designed. Unitary construction of engine/gearbox, cast-iron cylinder barrel and head, friction-damped rear suspension, girder forks, and full-width alloy hubs are a few notable features. A maximum of 12bhp was claimed for the VT4, which was good enough for a top speed of 65mph (105km/h). This smartly turned-out VT4 has been restored by a specialist in Milan. There are no documents with this Lot.
Founded in 1922 in Milan, engineer Fausto Alberti's factory specialised in the manufacture of industrial engines and out board motors before producing its first motorcycle under the Sertum brand name - a 175cc single-cylinder four-stroke - in 1932. Many types of machine were made during the 1930s, ranging from a humble 120cc two-stroke single to a sturdy 500cc unitary construction sidevalve twin. Sertums competed in many endurance trials, including the ISDT, proving quite successful in this role, and contracts were secured for the supply of machines to the Italian Army. Despite a reputation for first class quality, Sertum stopped production in 1952, its new models having failed to catch the imagination of the public, which was more interested in mopeds and scooters. The 250cc single-cylinder overhead valve VT4 model offered here is typical strongly built and well designed. Unitary construction of engine/gearbox, cast-iron cylinder barrel and head, friction-damped rear suspension, girder forks, and full-width alloy hubs are a few notable features. A maximum of 12bhp was claimed for the VT4, which was good enough for a top speed of 65mph (105km/h). This smartly turned-out VT4 has been restored by a specialist in Milan. There are no documents with this Lot.
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.jpg "Source: Christie's")
.jpg "Source: Christie's")
