Highlights of a must-view auctionCaxton Reporter Due to be held over two consecutive days, 17 and 18 May, the upcoming art auction offers a significant selection of modern, post-war and contemporary South African art. A walk-about among the lots of the upcoming Strauss & Co autumn sale is a bit like a journey on the Blue Train, watching the Southern African landscape flash past the window. There’s a quick view of a white stucco cottage, part of a Karoo landscape ( Train Passing through the Karoo, Peter Clarke R 150 000 – 200 000). A Northern Cape sunset follows, with big skies punctuated by camelthorn silhouettes ( Kimberley Sunset, JH Pierneef, R 800 000 – 1 200 000). Dusk follows in Namibia and the sky becomes a watercolour palette of cotton candy pink, mauve and indigo, hues melting together like Neapolitan ice cream (