Fresco 'Restoration' Fiasco Underscores Dangers of Restoration.

While no one disagrees that the restorer in question in the recent restoration fiasco lacked the credentials or ability needed for such a job, the result does underscore the difficulties and negative possibilities of restoration. Pointing to a few famous examples (from more reputable restorers in these circumstances), this author takes a look at the restoration business and sees this most recent tragedy, while a bit different circumstance, as just another example of the dangers of restoration...
http://www.telegraph.co.uk/culture/art/9498877/Restoration-tragedies.html

and I went ahead and got the two examples he says to compare...restored version first...