click image to enlarge

Juan de Flandes
The Annunciation

c. 1508/1519
oil on panel
painted surface: 110.2 x 78.4 cm (43 3/8 x 30 7/8 in)
Altarpiece of the "capilla mayor (main chapel)", church of San Lázaro, Palencia, commissioned c. 1508, until c. 1945. [1] Arcadio Torres Martín, Palencia, 1950-1951. [2] Acquired c. 1952 by (Frederick Mont, New York); [3] purchased 11 February1953 by the Samuel H. Kress Foundation, New York; gift 1961 to NGA.

[1] The commission was made by Don Sancho de Castilla. See Jan V.L. Brans, "Juan de Flandes, pintor de la Reina y de Castilla," Clavileño 4, no. 21 (1953): 32 for the state of San Lázaro and the cessation of services there shortly after September 1945.
[2] In 1950 and 1951, Egbert Haverkamp-Begemann saw six panels from the San Lázaro altarpiece--The Annunciation and The Nativity and the four panels now in the Prado--in the house of Sr. Torres Martín in Palencia; this information was given in conversations with Martha Wolff of 3 February 1984 and 24 July 1984.
[3] In 1952 all four panels now in the Gallery (1961.9.22-.25) were with Frederick Mont in New York; see letter of 28 October 1952 from Chandler R. Post to Mont in NGA curatorial files. Mont refers to having bought the pictures in Spain in a letter dated 16 April 1953 to Wilhelm Valentiner (Valentiner Papers, Archives of American Art, Smithsonian Institution, Washington: microfilm reel no. 2143; copies in NGA curatorial files).
Record Link