Paris , France Lady with an Ermine (1488–90) – Czartoryski Museum , Krakow , Poland Portrait of a Musician (c. 1490) – Pinacoteca Ambrosiana , Milan , Italy Madonna Litta (1490–91) – Hermitage Museum, Saint Petersburg, Russia La belle Ferronière (1495–1498) – Louvre, Paris, France — attribution to Leonardo is disputed