As GM was sharing platforms and technology within their divisions, the Master Six was related to the
Oldsmobile Model 30 with shared wheelbase and engine sizes. Buick had developed a market reputation as being a conservative luxury car, while the
Cadillac and the
Packard Six were more flamboyant, extravagant and expensive. The last
Emperor of China Puyi bought two 1924 Master Six and started the trend of being China's most popular car. To promote its durability, Buick President Harry H. Basset had a Touring Sedan driven around the world via a dealer-to-dealer network, where each location was responsible for driving the car to the next destination and having the log book signed for authenticity. The Master Six used Series 121 and 129 designations in 1929 initially to denote the wheelbase dimensions, then renamed the Series 40 in 1930. All were powered by the overhead valve
Buick Straight-6 engine, with multiple body styles, and starting in 1926 used the newly established
GM B platform, which it shared with
Oldsmobile L-Series. Coachwork continued to be offered by
Fisher Body who was the primary supplier of all GM products at this time, and
Duco automotive lacquer paint, introduced by
DuPont was the first quick drying multi-color line of nitrocellulose lacquers made especially for the
automotive industry. Roadsters and touring sedans had the ability to fold the windshield forward on top of the cowl for open air driving. The engine used in 1925 was increased in size to for 1926 through 1928. Displacement was increased again to for the Series 121 and 129 in 1929 and Series 40 in 1930, after which all six-cylinder engines were dropped; all models of Buick were equipped with the new
Straight 8 for 1931. Buick's special order catalog was more modest than the
Cadillac Series 341, but it did benefit from the specialized bodies made by
Fisher Body which gave the Buick customer the same attention to style and refinement but at a modest price. The top level choice for the longest Buick wheelbase of 129 inches was the Imperial Sedan Limousine for US$2145 ($ in dollars ). The Master Six was Buick's high-end offering, above the Standard Six. It was also manufactured from
knock-down kits at GM's short-lived Japanese factory at
Osaka Assembly in
Osaka, Japan. The Master Six was also sold with a junior model, called the
Standard Six which was renamed in 1929 as the Series 116 and Series 121. File:1925 Buick Model 50. Sedan - seven passenger. (3592705089).jpg|1925 Buick Master Six Sedan Model 50 File:Buick Cabriolet 1927.jpg|1927 Buick Master Six Series 128 Convertible Coupe Model 54CC File:Buick 4-Dorrars Sedan 192.jpg|1928 Buick Master Six Series 120 4-Door Sedan Model 50 File:Buick 29 49 7 Passenger Touring 1929.jpg|1929 Buick Master Six Series 129 Touring Sedan Model 49 ==See also==