Does the value reside in the name or in the image?

In the January 19, 2017 issue of The New York Times, Nina Siegal wrote about the discovery using materials analysis that a painting sold by Sotheby’s New York in 2012 was a modern fake and not a work by Parmigianino (“Second Old Master Painting Is Fake, Sotheby’s Says In Lawsuit”). Sotheby’s was required to return the purchase price to the buyer and is suing the consigner for the money he received from the sale . With the new attribution, the painting has lost its monetary value. But has anything changed aesthetically? This incident brings up the difficult question of whether the value of an artwork resides in the name attached to it or in the image