Our top international arts events this week: a sale of classic and vintage motorbikes and more

Plus: artistic responses to the trauma of Gallipoli.

A 1939 Vincent Series-A Rapide, a rare motorcycle which could go under the hammer for up to Dh1.9 million. Courtesy Bonhams
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Personal responses to a sense of national loss

Monday marks 100 years since the first engagements took place on Gallipoli peninsula during the First World War. The losses ­sustained there in a bungled campaign by the Allies hit Australian and New Zealand troops particularly hard. About 8,500 soldiers from ­Australia and 3,000 Kiwis died. This exhibition in ­Melbourne examines the response of artists who drew on their own ­experiences of the conflict. Featuring work from artists such as Max Dupain, Frank Hurley and Weaver Hawkins, the exhibition reveals the many experiences of this time of ­turmoil. Follow the Flag: Australian Artists at War 1914-15 runs at the National Gallery of Victoria until August 16. For more information, visit www.ngv.vic.gov.au.

A fine eye for art and open ear for good advice

From 1906 to just before the outbreak of the Second World War, the Swiss couple Arthur and Hedy Hahnloser-Bühler ­assembled an impressive art collection. Through their friend and artist Félix Vallotton, the duo were introduced to Henri Matisse and Pierre Bonnard among others. It was these friendships and connections that made their ­collection such an expert one, and it went on to include ­pieces from Paul Cézanne, Édouard Manet and Auguste Renoir. Enchanted Times: Cézanne, Van Gogh, Bonnard, Manguin. Masterpieces from the Arthur and Hedy Hahnloser-Bühler Collection runs at the Hamburger Kunsthalle, Germany, until August 16. For more information, visit www.hamburger-kunsthalle.de.

All revved up for sale of classic motorcycles

With 190 motorcycles and dozens of lots of memorabilia, this year's sale of bikes is, according to Bonhams auction house, the finest in years. Included is a 1911 Douglas Model D, expected to sell for up to Dh73,000 and several Brough Superiors, a make once owned by T E Lawrence. One of the highlights is a rare British 1939 Vincent-HRD Series-A ­Rapide. The bike had been rescued from a scrapyard and ­underwent a seven-year restoration. There are only 65 of these bikes left and it is expected to go under the hammer for up to Dh1.9 million. The Spring Stafford Sale: Pioneer, Vintage and Collectors' Motorcycles takes place in ­Stafford, England, tomorrow. For more information, visit www.­bonhams.com.