Creator: Possibly Florentine 15th Century (pax frame), western European 19th Century (miniature)
Date Created: c. 1480 (pax frame); c. 1850/1875 (miniature)
Physical Dimensions: overall: 23.6 x 13.1 x 6.7 cm (9 5/16 x 5 3/16 x 2 5/8 in.)
Provenance: Reportedly Trivulzio collection, Milan; (Count Alessandro Contini Bonacossi, Florence); purchased by 1937 or 1939 by Samuel H. Kress, New York,[1] as Venetian, c. 1400; gift 27 February 1950 to the Samuel H. Kress Foundation, New York;[2] gift 1961 to NGA.
[1] A. M. Hind to John Walker, 12 June 1951, states that Hind first heard (from Alfred Frankfurter, editor of _The Art News_) of the Trivulzio nielli, with which this enamel was acquired, in Kress's hands in 1937. Marie-Madeleine Gauthier, in a letter to Alison Luchs of 25 June 1984, mentions a sale of the Trivulzio collection in London, 6 June 1939; no catalogue has been located.
[2] Deposition by Herbert L. Spencer, executive director, Samuel H. Kress Foundation, 21 August 1956, on file in the secretary-general counsel's office files, National Gallery of Art, Kress no. 0-153.