A manuscript from the early 1400s gives a recipe for a "blue [pigment] raised in the Florentine manner," a likely reference to the striking cobalt-blue paint found on this jar and many others associated with Florentine potters. Sometimes called "relief blue," the paint is applied so thickly as to create a raised surface.
Sigismond Bardac, Paris (sold 1913); [ Arnold Seligman, Rey & Co., Paris and New York (1913–sold 1914)]; Mortimer L. Schiff, New York (1914–d. 1931); John M. Schiff, New York (1931–1946); [his sale, Parke-Bernet Galleries, New York (May 4, 1946, no. 7)]
Leman, Henri. Collection Sigismond Bardac: Faïences italiennes du XVe siècle. Objets de haute curiosité, Moyen Âge et Renaissance. Paris: Librairie Centrale des Beaux-Arts, 1913. no. 2, ill.
Ricci, Seymour de, ed. A Catalogue of Early Italian Majolica in the Collection of Mortimer L. Schiff. New York: s.n., 1927. no. 5, ill.
Avery, C. Louise. "The Mortimer L. Schiff Collection: Early Italian Maiolica." The Metropolitan Museum of Art Bulletin, n.s., 33, no. 1 (January 1938). pp. 12–13, fig. 2.
The Magnificent Collection of Italian Majolica Formed by the Late Mortimer L. Schiff. New York: Parke-Bernet Galleries, May 4, 1946. no. 7, p. 3, ill.
Wilson, Timothy. Maiolica: Italian Renaissance Ceramics in the Metropolitan Museum of Art. Highlights of the Collection. New York: The Metropolitan Museum of Art, 2016. no. 6, pp. 60–61, 80.