Jan’s passion for collecting must have started around that time, because just after the war he found all kinds of helmets, badges and passports of German soldiers who had left in a hurry in abandoned buildings. He keeps the certificates and medals with swastikas and skulls in a biscuit tin. Later he also started collecting postcards, cigar boxes, anti-aircraft guns, rifles, helmets, maps and banknotes. “By the way, I’m still looking for a postcard of the swimming pool in Amerongen. Four have been made and I am still missing one.”