Figure 1From: Brownish alterations on the marble statues in the church of Orsanmichele in Florence: what is their origin? San Filippo by Nanni di Banco 1410. The statue covered by the bronze-like patina, immediately before restoration (a). The statue immediately after restoration in 1996 (b). The statue as it appeared in 2012, almost completely brown (c). Photographs Opificio delle Pietre Dure.Back to article page