Rockefeller's Picasso could be part of biggest art collection ever sold

PARIS (Reuters) - A rare Picasso once owned by Gertrude Stein is part of an art trove belonging to the Rockefeller dynasty that could raise half a billion dollars this year, in what auctioneer Christie's says could be the most valuable sale ever of a private collection.

from Reuters: Lifestyle http://ift.tt/2HBIOLg