It is from the 1955 Le Mans. Info here https://www.classic-trader.com/en/magazine/le-mans-1955 The suit is Alfred Neubauer. He had a string of successes and consequently the glorious career of Alfred Neubauer as a racing team manager ended in probably the darkest day in motor sport history: 11 of June 1955 at Le Mans. On that fateful day, the most catastrophic race accident in terms of human death toll happened, when a Mercedes-Benz 300 SLR driven by Pierre Levegh was catapulted into the spectator crowds, killing the driver and over 80 spectators, while the total number of bystander victims was close to 200 souls. https://www.autoevolution.com/news/alfred-neubauer-the-first-don-of-motor-racing-1594.html