![A man passes Roy Lichtenstein's mural "Brushstroke· at the Heinrich Heine university in Duesseldorf, Germany, 20 November 2017. The mural from the year 1970 has undergone an elaborate restauration thanks to private A man passes Roy Lichtenstein's mural "Brushstroke· at the Heinrich Heine university in Duesseldorf, Germany, 20 November 2017. The mural from the year 1970 has undergone an elaborate restauration thanks to private](https://l450v.alamy.com/450v/khym03/a-man-passes-roy-lichtensteins-mural-brushstroke-at-the-heinrich-heine-khym03.jpg)
A man passes Roy Lichtenstein's mural "Brushstroke· at the Heinrich Heine university in Duesseldorf, Germany, 20 November 2017. The mural from the year 1970 has undergone an elaborate restauration thanks to private
![A man passes Roy Lichtenstein's mural "Brushstroke· at the Heinrich Heine university in Duesseldorf, Germany, 20 November 2017. The mural from the year 1970 has undergone an elaborate restauration thanks to private A man passes Roy Lichtenstein's mural "Brushstroke· at the Heinrich Heine university in Duesseldorf, Germany, 20 November 2017. The mural from the year 1970 has undergone an elaborate restauration thanks to private](https://c8.alamy.com/comp/KHYM4B/a-man-passes-roy-lichtensteins-mural-brushstroke-at-the-heinrich-heine-KHYM4B.jpg)
A man passes Roy Lichtenstein's mural "Brushstroke· at the Heinrich Heine university in Duesseldorf, Germany, 20 November 2017. The mural from the year 1970 has undergone an elaborate restauration thanks to private
![The restaurators Michael Schubert and Thomas Brüning stand with Prof. Dr. Hannelore Riesner, head of the centre for university funding at the Heinrich Heine university in Duesseldorf in front of Roy Lichtenstein's The restaurators Michael Schubert and Thomas Brüning stand with Prof. Dr. Hannelore Riesner, head of the centre for university funding at the Heinrich Heine university in Duesseldorf in front of Roy Lichtenstein's](https://c8.alamy.com/comp/KHYM67/the-restaurators-michael-schubert-and-thomas-brning-stand-with-prof-KHYM67.jpg)