a=the arm. b=the cap that goes at the end of the arm to close up opening (not to close up the window).
1935, Meyer, Versailles, France; September 15, 1935, sold by Meyer to the Brummer Gallery, New York (stock no. P12097); May 14, 1949, Brummer sale, Parke-Bernet Galleries, New York, lot 692, to the MFA for $175. (Accession Date: May 12, 1949)
William Francis Warden Fund