Lang & Heyne Frederich II Remontoir, Platinum

£60,000
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This is a Lang & Heyne Friedrich II Remontoir Limited Edition 9 made for Hong Kong-based retailer The Lavish Attic. It features a 39.2mm platinum case with a black enamel dial with white enamel printing, except for 9 o’clock – this is achieved in a coral red shade. The manually wound calibre VI-I powering it is crafted extensively with titanium. It features a one second Reuleaux triangle remontoir which gives the watch its deadbeat trait.

REMONTOIRE

A remontoire is delicate - and it’s hard to make a delicate system reliable. Given its complexity, one might argue, that the gains in precision are too small. And then it typically adversely affects the fragility of the system to position it so as to see it working through a caseback window, which limits its appeal for some.

This niche idea is that of giving constant force to the escapement, long a challenge to mechanical watchmaking seeing as the energy from the main spring, inevitably, gradually decreases as it relaxes from its fully-wound, maximum force state. So, John Harrison, he of the world-changing marine chronometer, came up with the remontoire back in the 1760s.

Friedrich II Remontoir Jumping Seconds | Platinum Lang__Heyne_Friedrich_II_Remontoir_Jumping_Seconds__platinum_A_Collected_Man_London_08.jpg A Collected Man london
Friedrich II Remontoir Jumping Seconds | Platinum Lang__Heyne_Friedrich_II_Remontoir_Jumping_Seconds__platinum_A_Collected_Man_London_08.jpg A Collected Man london

It’s clever because when its own spring - or, in larger mechanisms, maybe a weight - reaches the end of its power, its re-winding is automatically triggered - at an interval of any time between one second and one hour - and it’s this frequent re-winding that adds to accuracy because it averages out any changes in the force of the remontoire itself.