Still Life With Portrait , '' an unsigned 1906 work that Picasso painted while spending part of the summer in Gosol , a village in the Pyrenees , is being sold as a result of an agreement between the owner , Duncan V. Phillips -- grandson of Duncan C. Phillips , the collector who was the founder of the Phillips Collection in Washington -- and heirs of Ernst Schlesinger , a collector from Hamburg , Germany , who died in 1925 .