On the auction block is a rare Francis Bacon triptych that could be the most expensive painting ever auctioned.

The very last work in the National Portrait Gallery’s new exhibition of Francis Bacon’s portraits is like a gut punch. Triptych May-June 1973 is atypical of the artist’s work in that it ...

There’s a limit to how much you can say about Francis ... heads triptych (flanked by broken images of his recently deceased lover Peter Lacy) shows any bruising, angry insight, Bacon’s face ...