Pre- and post-restoration views of Isabella de’ Cosimo I de Medici (circa 1570–74), attributed to Allesandro Allori. Courtesy of Carnegie Museum of Art. Pittsburgh’s Carnegie Museum of Art was convinced that a supposed 16th century Bronzino painting was a modern fake. Conservators discovered that the work was authentic, but had received a dramatic makeover during the 19th century. Image on right is the original.