Coat is not new.
http://www.people.vcu.edu/~djbromle/artviewsnet/portrait04/tim/MtRushmorePart1.htm
Mt. Rushmore was pressure washed in 2005. (& recently in 2016)
http://www.washingtonpost.com/wp-dyn/content/article/2005/07/10/AR2005071000754.html
Coat is not new.
http://www.people.vcu.edu/~djbromle/artviewsnet/portrait04/tim/MtRushmorePart1.htm
Mt. Rushmore was pressure washed in 2005. (& recently in 2016)
http://www.washingtonpost.com/wp-dyn/content/article/2005/07/10/AR2005071000754.html