For fragments found at Montelupo decorated with a very similar pattern, see Galeazzo Cora, Storia della maiolica di Firenze del contado, Secoli XIV e XV (Florence, 1973), pls. 247b and 267a, where they are dated by Cora to 1490-1500. For the example of very similar type in the Victoria and Albert Museum, London, see B. Rackham, Catalogue of Italian Maiolica (London, 1940), Vol. II., pl. 56, no. 354 and Cora ibid, pl. 245, no. 245a. For the example in the Bargello, see Giovanni Conti, Museo Nazionale di Firenze Palazzo del Bargello, Catalogo delle Maioliche (Florence, 1971), no. 113. For an example in the British Museum with a more elaborate version of this pattern, see Timothy Wilson, Ceramic Art of the Italian Renaissance (London, 1987), p. 88, no. 132, which he dates to 1500-1530.