It was produced by MGC (Marcel Guiguet & Compagnie), a French manufacturer active between 1929 and the late 1930s.

This “Type N 3 A” model features a particularly original chassis: there is no traditional frame, as the structure is made of cast aluminum “Alpax” parts forming the fuel tank and main framework.
The fuel tank and oil casing are aluminum, connected by steel struts to form the motorcycle’s “spine.” It is equipped with full braking (front and rear) operated by cables, which was very advanced for the time.

MGC used JAP engines (and sometimes Chaise engines), and Burman 3-speed gearboxes on this type.
MGC production was always limited (a few hundred units), mainly due to the high manufacturing cost.
The brand’s logo is a stork, referencing the “Cigognes” squadron in which Guiguet’s brother served during World War I.

Today, MGC motorcycles, particularly the 500 N3A, are highly prized by collectors for their originality and technical sophistication.

Single-cylinder 4-stroke JAP engine with twin exhausts, 490 cc (85.7×85), 19 horsepower at 4,000 rpm
Overhead valves
Magneto ignition
Sturmey-Archer 3-speed gearbox operated by right hand
Light alloy (Alpax) beam frame, serving as an oil tank in its lower section
Front suspension: parallelogram fork
Coupled front/rear braking operated by right foot, with a proportioning device – no rear suspension
Top speed: 80,8 mph