The impossible images of 'unique' graphic artist M.C. Escher come to London (All M.C. Escher works © 2015 The M.C. Escher Company-The Netherlands. All rights reserved) ...

An Antiques Roadshow expert was floored that an unusual piece of art worth a whopping five-figures ... a guest brought in an M.C. Escher print that his grandfather bought and gifted to his parents ...