The works up for grabs range from jewellery to mobiles

The biennial award will be a hefty $50,000

A French company is re-producing toys by the inventor of the mobile

Five-decades of art will be on display before travelling on to Madrid

Calder continues to mobilise the market

It was inevitable that attendance and sales would be down with current economic instability, but overall sales were good and quality was high

With a Calder, the judge overruled the expert; with a Schiele, the judge decided deceit was the clincher, and with a Braque, the judge upheld Christie’s right to fear liability

The Calder foundation cites fears concerning authenticity

The master of mobiles and his relation to Parisian Modernism reassessed

Tapping into the artist's popularity after the success of his RA appearance

This ups the museums holdings of the artist to 22

Underappreciated in Britain, the Sackler Galleries mobilise for this modern master