Not many people are as shrouded in mystery as Jan Christiaan Braun. A mysterious art collector from the small village of Nieuwersluis in the municipality of Stichtse Vecht. Exactly five hundred people live there. While ‘Tshirt from number 19’ is known to everyone who speaks to RTV Utrecht, the name Braun, who lives a little further away, mainly raises questions. Only a few have seen the man briefly, the rest only know the Over Holland estate. That is where the knowledge about the Over Holland and Braun foundation ends.