• Women collectors of the belle époque
• An interview with Nalini Malani
• At Palazzo Schifanoia in Ferrara
• Fine art, fast food and the Fourth Plinth
Plus: a paean to the public-information poster, the plight of museum employees – and an apologia for Coventry
What happens when an artist wants to be anonymous?
An Austrian museum is hosting a show by an unnamed artist – but perhaps this act of secrecy will help us see the work more clearly