I met DDD once, about 10 years ago, at a dinner with friends at Gstaad (CH). It took me a while before I realised that it was him. Well in his nineties, at that time, but still a very sharp mind. After dinner he showed me the black (unrestored) Mercedes SLR 300 which he received from Pablo Picasso and had now returned it back to Claude Picasso, who was also present. As with most exceptional people: modest, gentle and soft speaking.
This is a sad day. RIP.