 When exhibited at the Boston Museum of Science in 1997, the museum agreed to change the credit on the label of the sculpture from "by Leonardo" to "attributed to Leonardo", but art historian Jack Wasserman still insisted that nothing has survived to support the attribution.Art historians Pietro Marani and Franco Cardini, and art critic Vittorio Sgarbi, likewise doubted the sculpture's provenance when the bronze cast was exhibited in Milan in 2016, commenting that there still isn't adequate hard evidence to support the attribution of the work to Leonardo, and that Pedretti and Solari are often too generous with their attributions.Following his studies of medieval cavalry, Cardini also criticised the historical accuracy of the sculpture.