ANDREA AND GIOVANNI DELLA ROBBIA  
                                                
                                                                                                    (Florence 1435-1525 - Florence 1469-1529/30)
                                                                                                
                                            
                                            
                                            Madonna with Child between four cherubs and the Holy Spirit’s dove
                                                                                        Glazed terracotta with white figures on a cerulean blue background, with gilt highlights, cm 56,5x44,5 
                                            Study by Prof. Giancarlo Gentilini