The old master dealer on market caution, setting the record straight with Colnaghi, and working for a very private collector

Art and antiques fair builds on last year’s success of attracting high-spending collectors with a new section devoted to works on paper

Searching for underdrawings, conservators discover the artist’s reflection

Next year their collection of Dutch and Flemish 17th-century paintings goes on display for the first time in Europe and the US. The couple gave us their first ever interview

Faulty fire sprinkler “rained on” Leonardo’s portrait, reveals former director

Reinhold Würth has converted a church for old masters

Old masters, recovered as a result of one of the world’s largest Nazi restitution claims, net $20m

Salander-O’Reilly denies all charges

The Raphael was bought by the National Gallery for £22 million in February 2004

Two books try to shed new light on why Leonardo continues to exert a fascination for scholars, art historians and the public

Fragility of panels has made museums reluctant to lend

But the 139 works go to Dutch State, not collector’s heirs

Rediscovered Rembrandt made £6.9 million

Two studies of the Renaissance artist’s works reveal divergent assumptions about interpretation

Private collector vs State in Spain

A new exhibition takes a closer look at Leonardo's work on paper

Four drawings are being claimed by the heir of a Nazism victim

This makes it the first US city host Raphael drawings from the Lille Palais des beaux-arts’ renowned collection

The decadent show includes works from the Budapest Museum of Dine Arts, and is open until 4 August

Old Masters were booming, but decorative arts were a hard sell

Dreesmann was a passionate and committed collector who barely ever sold on his beloved acquisitions

And a wider range of stock attracts more collectors

"Mars and Venus" will pay for essential repairs

Raphael gets assessed according to the theories of Rudolph Steiner and Vasari’s judgement of Andrea del Sarto is reversed

Raphael’s “Donna Velata” and Titian’s “Young Englishman” have become two of the most influential paintings by Renaissance masters

As the supply of works by the big names dwindles demand is growing for pictures by lesser known artists

While a broad consensus emerged that sales remain solid, the demand for quality pictures outstrips supply, causing frustration among serious collectors

While the market remains largely stable in Europe, the demand for quality pictures, fuelled by thriving European economies, outstrips supply

Nina Amaku's rendition of 'Il Cavalo' is relegated to the racetrack

Trade at home is still strong, but Germany is looking for business beyond its borders