The experience Hans Kleissl gained during the restoration of his own Mercedes-Benz 300 SL Roadster that he had obtained in 1979, led to the growth of an idea of opening and building up his own restoration company. A restoration company dedicated exclusively to this car. For only through dedicated specialization and the thereby resulting growing level of experience could the highest quality levels be attained. Hans Kleissl was the first to carry out this idea of specialization on one car model. In the 80s and 90s it was usual the restoration companies restored any vehicle and not just one model.