The 14 fragments with the Apostles and Angel musicians (these are also exhibited in room IV) together with the figure of Christ (in the Quirinal Palace) were all part of the old decoration of the apse of the Church of the SS Apostoli in Rome, illustrating the Ascension of Christ. The solemn, monumental figures, strongly foreshortened, testify to the full maturity of the great artist, a follower of Piero della Francesca, and his skill with perspective.