来源
Lucien Henraux, Paris, by whom acquired directly from the artist.
Paul Rosenberg & Co., New York.
Acquired from the above by the previous owner; sale, Christie's, New York, 9 May 2000, lot 321.
Anonymous sale, Germann, Zurich, 21 November 2000, lot 13.
Acquired at the above sale by the present owner.