A similar tondino in a private collection, Berlin, is illustrated by Tjark Hausmann, Fioritura, Blütezeiten der Majolika Eine Berliner Sammlung (Berlin, 2002), pp. 102-104, no. 39. Also see A.V.B. Norman, Wallace Collection Catalogue of Ceramics 1, Pottery, Maiolica, Faience, Stoneware (London, 1976), no. C49 for a similar example.
The underside of this tondino is illustrated at the end of the catalogue.