Fabienne Xavière Sturm. Letter to Katharine Baetjer. December 11, 1995, with her colleague Hans Boeckh, rejects the old identification of the sitter [see Notes] as well as an attribution to the Huaud brothers, suggesting that it may be of German origin.
Graham Reynolds with the assistance of Katharine Baetjer. European Miniatures in The Metropolitan Museum of Art. Exh. cat., The Metropolitan Museum of Art. New York, 1996, pp. 11, 76, no. 19, ill. p. 77, state that it "almost certainly" does not depict Louis XIV or Paul Scarron, first husband of Françoise d'Aubigné [see Notes]; note that it is "painted in the rough stippling method, derived from Paul Prieur . . . that was adopted by some Swiss enamelists in the second half of the seventeenth century".