He is the famous inventor of numerous and ingenious complications of Ulysse Nardin and the founder of the Musée International d‘horlogerie in La Chaux-de-Fonds (Switzerland). Whenever I met him he always sported shirts with cuffs like this.
Professeur Oechslin is a very nice, very charismatic man. As far as I know, he is not a watchmaker but a scientific historian. It was great fun for him to show his UN „Freak“ without moving his cuff