(Artist unknown)
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/10506176@N07">Emmanuel Huybrechts</a> from Laval, Canada
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/ensh/5084228263/">Old Cogs</a>