Inside David Nahmad’s Personal Art Collection David Nahmad in Paris. Photo: New York Times WHERE TO FIND Total Shares David Nahmad is an art dealer who purports to have the world's largest private collection of paintings by famed master Pablo Picasso. And this remains the case even after he let go of one of those paintings, a decision that was the recent subject of an interview with the Associated Press. Nahmad last year, let go of Nature Morte, a 1921 Picasso oil-on-canvas painting that Nahmad says he doesn't specifically remember his rationale in buying: "We bought so many Picassos now, ...