The history of BMW’s six-cylinder models began in 1933 with the 303, which not only featured the new engine under the bonnet but also sported a kidney-shaped radiator grille. Although it still had a modest 1.2-litre displacement and 30 PS, the foundations had been laid, particularly as the 303 also introduced a new, advanced tubular frame. As early as 1935, its successor, the 315, was launched; thanks to a longer stroke and a slightly larger bore, its engine now had a displacement of 1.5 litres and produced 34 hp. The 319 was produced alongside the 315; it featured an even larger engine, which ultimately delivered 55 hp at 4'600 rpm in the 319/1 sports model thanks to three carburettors. As the body styles of the 315 and its counterparts were looking rather old-fashioned, the BMW 326 was introduced in 1936; equipped with a further enlarged two-litre version of the six-cylinder engine and two carburettors, it now produced 50 hp. However, the car – with its longer wheelbase and opulent, aerodynamically styled bodywork – had also become heavier; its 1'100 kg kerb weight placed a strain on the engine, which was not exactly suited to high revs. Not only was the bodywork of the four-door 326 new, but the chassis had also been redesigned with a low-bed box frame, independent front suspension and a rigid rear axle. As the BMW 326 had become expensive, it was joined in 1937 by the two-door 320, which shared many components with the 326. Costs were cut on the engine technology, however, with the car fitted with just a single carburettor, which reduced the power output to 45 hp. With the 326, the 320 and the 329, as well as the 328 racing car built from 1936 onwards, the company had a sizeable model range and a veritable component kit. This also formed the basis for the elegant BMW 327, which was initially available as a convertible and soon afterwards as a coupé. A sweeping sheet-steel body, built on a wooden frame and featuring a long bonnet, was mounted over the 320’s box-section frame. The windscreen was, however, split into two sections. The engine used was the 55 hp twin-carburettor version from the BMW 326. A four-speed gearbox from Hurth was fitted. At the front, triangular wishbones with integrated lever-type shock absorbers provided suspension, whilst at the rear the familiar rigid axle with lever-type shock absorbers and semi-elliptical springs was used. Braking was hydraulic via four drum brakes, whilst steering was by rack and pinion, as on the 303. Unlike the BMW 328, to which the 327 was conceptually and design-wise related, the 327 was not intended to be a racing car, but rather a touring sports car. This beautiful BMW 327 Cabriolet, one of 1'124 built, is believed, according to the vehicle registration document, to have been delivered to Switzerland as a new car in 1939. The history of this rare Bavarian car is unknown, but it appears to have undergone a complete and extensive restoration several years ago. Around 30 years ago, this elegant convertible entered the collection of its last owner, who, amongst other things, took part in the Raid Suisse-Paris in it. In recent years, the BMW has spent most of its time parked in a dry hall – a logbook shows that only around 300 km have been covered in the past 20 years. The convertible is currently in good to very good condition; the bodywork and interior are in excellent condition, the engine runs well and the gearbox shifts correctly. Given the long period of inactivity, a service and a general inspection should certainly be scheduled before undertaking a long journey. The last veteran MOT took place in August 2018.