A silver Hercules and the Centaur, now lost, was created by Giambologna in the late 1570's and was placed in the Tribuna of the Uffizi. The first mention of a bronze version dates to 1609, a model by Susini. The model was also carved in marble, between 1594 and 1599, in a version now in the Loggia de'Lanzi. It was a very popular model and was copied throughout the eighteenth and nineteenth centuries.
Avery & Radcliffe, p. 128, no.81