Daggers, dervishes, Rego and the world’s most expensive egg – the week in art

The British Museum is infused with Sufi spirit, Henry VIII’s storied Ottoman dagger gets its own show, Rego’s art is renewed and a Fabergé sets a new record – all in your weekly dispatch Henry VIII’s Lost Dagger A curious quest for the Tudor tyrant’s lost, highly phallic dagger in the house (…)