This model is not one of the 11 missing models that was sold in 1938 by Christie's. Read the History of the models IMHO, This model may be from the hands of M for the following reasons: 1)The model model is large for a M model: 14.4 inches or 36.6 cm. It is made of red terracotta clay the same clay M used. But, the "David" model from which he carved the statue was said to be from a 12" model. So the height is acceptible. 2)This model probably came from the Von Praun Collection which was in the collection since 1616?. Count Stanislaw Kostka Potocki, one of the owners of Wilanów, Castle, bought the model in Paris in 1808. This is close to date of the von Praun fire sale in 1803. The model is now in the Wilanów Palace Museum in Poland 3)The Polish museum attributes the model to Anotono Mini (1507-1533) who was a student in M's workshop. He entered the workshop in 1523 when he was 16. Mini moved to Lyon, France in 1531 to provide doweries for his sisters and is known for making copies of M's painting "Leda and the Swan" in France which M gave to him. 3) The model is not a exact copy of the. It includes the folds of Moses's garments but not exactly as they are on the statue. So, the model resembles the statue. This occurs in other models that M made. The hand or head may be finished in the model but is missing in the statue. 4)On the model the folds of the garmet by the left leg are simplified on the statue whereas on the modle the folds are more compliex. See red box The face is a good representation of the statue. But, there is a horn missing from the models head that is on the statue.. Perhaps it broke off. More closeup photos from the same angle as the statue would help to resolve the differencces in the details of the model. Also a photo of the model taken from the same angle as my picture of the statue would also be of great help. See yellow box 5) The differences betwen the model and statue implies that the model was copied after the original model or it is the original model. The face is a good representation of the statue. M presented small clay presentation models, or " bozzetto" to his patrons before he carved them into marbles. The presentation models served to indicate to the patron what he was getting for his money. Later M would give away the presentation model to his patron oradmires. Sometimes, the model was made in wax from the clay or the wax model was cast into bronze and given away by M. Von Praun was known to buy back some of these "presentation" models. The statue was created for the 2nd version of Pope Julius II tomb, Pope Julius II herirs, for whom the "Moses" was carved were probably given the model 1516. The Jews of Rome venerated the "Moses" statue. So, even a rich Jew could have ended up with the model. 6) The "Moses" was carved between 1513-1515? It was carved but not finished. There was a lot of drill work here. and the pope reassigned M to new projects. The statue was finally finished in 1542? for the 5th version of the tomb. M was very upset about not finishig this tomb in 1516. The Popes kept giving him new projects to do and told the heirs to wait.. So, 1516? the long waiting heirs were probably given the model as a consilation prize by M. Also, Anonio would havee been 6 years old in1515 when M started carving the statue.. So, it is very unlikely that Antonio made the model and the model is most likely by the hand of M. Or, a student could have made it years after 1516. 7) M died in 1564. Before M died he destoryed the models and cartoons he had made. All the sistine chapel cartoons went up in smoke. It looks like M missed destoying this model. I'm sure if M had it he would have destroyed it. M was a very secretive person and did not revealing how he worked. Perhaps, when Rustici returned Antonio's 40 models to Florence he didn't give them to M. Perhaps, he just kept them or sold them. After M died in 1564, Vasari acquired the models. 8)The bottom line is that the this model IMHO has the "look and feel" of being a M. If it was a student copy it would have looked like a student copy. God only knows who made this.