Mention Harry Winston to someone and it will likely conjure images of necklaces and rings, and more specifically diamond ones. But for a number of years, the company has been making incredible inroads into being taken as seriously for its watchmaking as its jewellery. Apart from the Opus and Project Z range, there’s also been the Histoire de Tourbillon series, which for the seventh consecutive year has resulted in a spectacular headline piece (shown here). Comprising 507 components, this year’s edition features not just one, but two bi-axial tourbillons married by a spherical differential that averages their behavioural patterns relative to position and gravity to yield a spectacular, synchronous ballet with time. It’ll be limited to 20 pieces, half of which will feature red dials and the other half, anthracite. Final pricing has not yet be revealed but we’d expect it to be somewhere close to last year’s 600,000 USD cost.