At last year's Phillips spring auction in Geneva, the 1815 "Homage to Walter Lange", manufactured only once with a steel case, was sold for more than 700,000 euro. It was the highest auction result ever achieved for an A. Lange & Söhne wristwatch. The entire sale proceeds were donated by A. Lange & Söhne to the foundation Children Action in honour of Walter Lange, the founder of the company who died in 2017. Almost a year after the auction, Lange CEO Wilhelm Schmid met the surgeon Professor André Kaelin, who works for Children Action, at Clinique de Grangettes in Geneva to talk to him about the foundation's current work.