A similar version of the present bronze is in the Victoria and Albert Museum (inv. no. A.111-1910) and was attributed by Planiscig to Gianfrancesco Susini (circa 1585- after 1653). This attribution has since been revised, and the V&A example has more recently been tentatively described by the Museum as French. A less fine cast of the model is preserved in the Cleveland Museum of Art, Ohio (inv. no. 1972.23). Wixom catalogued it as German, possibly Augsburg, circa 1530-1540, and argued it might be the prototype for later casts, such as that in London. The Cleveland example is now listed on the Museum's website as German, 1600s or later, and the dense, stylised curls of hair might support such an origin of the model. Other versions include one formerly in the Castiglioni collection, Vienna, and one in gilt bronze formerly with Daniel Katz Ltd.
L. Planiscig, Sammlung Camillo Castiglioni, Vienna, 1923, no. 91; L. Planiscig, Piccoli Bronzi Italiani del Rinascimento, Milan, 1930, fig. 377; W. Wixom, Renaissance Bronzes from Ohio Collections, Cleveland, 1975, no. 179; http://collections.vam.ac.uk/item/O106659/st-sebastian-statuette-unknown/ [accessed 17 May 2018]; http://www.clevelandart.org/art/1972.23 [accessed 17 May 2018]