
21. Moser & Cie Venturer Concept Only Watch
Minimal to the extreme, H. Moser & Cie’s Concept collection forgoes logo, branding and indexes in favour of pure colour – in this case a vibrant red that, with the white hands, recalls the Monaco flag.
Estimate: CHF 19,500 – 29,500; www.h-moser.com

22. Harry Winston Ocean Big Date Only Watch
Once again inspired by the auction’s thematic yellow, this version of Harry Winston’s architectural Project Z masterpiece married bold, brushed steel with contrasting black and yellow.
Estimate: CHF 39,000 – 49,000; www.harrywinston.com

23. Hautlence BALL-e
The idiosyncratic plaything that is Hautlence’s pinball ‘watch’ takes on a cast worthy of Pixar for Only Watch 2017. Turn the lights off and you reveal the face of a robotic pinball wizard.
Estimate: CHF 23,000 – 38,000; www.hautlence.com

24. Hermès Slim d’Hermès l’Heure Impatiente
Essentially a mechanical alarm, the so-called ‘impatient hour’ complication here takes on a more modern interpretation in sand-blasted titanium and subtle yellow highlights.
Estimate: CHF 35,000 – 55,000; www.hermes.com

25. Hublot Big Bang Unico Sapphire Usain Bolt for Only Watch
This unique piece, created in honour of the incredible Jamaican runner, is not only influenced by his team colours and victory ‘lightning bold’ but comes complete with a signed team jersey.
Estimate: CHF 50,000 – 80,000; www.hublot.com

26. Jacob & Co Epic X Chrono Only Watch 2017
The black and yellow of Jacob & Co’s sports watch add an even bolder appeal to the monolithic 47mm case, a unique combination the winner will get to show off at the “Leonardo Dicaprio Foundation” gala in July 2018.
Estimate: CHF 20,000 – 25,000; www.jacobandco.com

27. Jaquet Droz Grande Seconde Off-Centered Cuprite
If passion were a stone it would be cuprit, the fiery red grain of which has transformed this individual interpretation of Jaquet Droz’s beautiful Grande Seconde Off-Centered.
Estimate: CHF 30,000 – 40,000; www.jaquet-droz.com

28. Konstantin Chaykin Joker
Hour and minute indicators for eyes, a moon phase for a tongue, the face of Konstantin Chaykin’s Joker is ever moving and if finished with engraved ruthenium and silver.
Estimate: CHF 10,000 – 15,000

29. Laurent Ferrier x Urwerk
You can envisage what the coming together of these two legendary watchmakers might be like but unfortunately until this timepiece is finally revealed before the auction that’s unfortunately all you can do.
Estimate: N/A; laurentferrier.ch

30. Louis Moinet Metropolis Only Watch
This version of the Metropolis – a reinterpretation of Louis Moinet’s original chronograph from the early 1800s – renders the moon in its gilt dial, which has been hammered into craters, themselves set with lunar meteorite fragments.
Estimate: CHF 17,000 – 22,000; www.louismoinet.com