The box of pencils – a very rare "Faber Castell dated 1990 Mongol 482 Series" – will be put back by Hirst, although the installation is no longer on public display. But that is not the end of it.

Tech Know: Turn your photos into cartoons or pencil sketches. September 30, 2018 — 12.15am. Save. Log in, register or subscribe to save articles for later. Save articles for later.