2017 marks the 20th anniversary of the Aquanaut, a Patek Philippe sports watch which, despite its pedigree and fabulous design, remains in the shadow of the legendary Nautilus, and continues to divide hardcore fans of the brand.
A watch with a slide rule is a rare beast, made by only a handful of brands and intended for a specialist audience. As interest in professional tool watches grows, it's worth reminding ourselves how these mechanical calculators work, and why they were so important in the pre-digital age.
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Among the lots at a forthcoming sale at Christie's in Milan will be three exclusive Jaeger-LeCoultre watches, made in support of the Salam Centre in Khartoum, which is run by Emergency, an Italian humanitarian organisation which provides otherwise unobtainable treatment for children and adults suffering from heart disease.