PATEK PHILIPPE CALIBRE 240
Sitting at the pinnacle of fine Swiss watchmaking,
Patek Philippe is renowned for its elegant high complication watches. Such a feat would not be possible were it not for movements like the 240, a trusty, self-winding ultra-thin movement designed to take on more modules for ever more complications, while still looking svelte, and gala-ready. Unlike most self-winding movements sporting a full-sized rotor, the 240’s is a micro-rotor, not stacked on top of the movement (thus adding height) but recessed on the periphery, hence contributing towards a slim profile. At the same time, it does not obscure the beauty of the wonderfully decorated 240 when viewed through a crystal case back, though the rotor too is a thing of beauty in itself, a solid piece of 22K gold.
Automatic movement beating at 3Hz, with silicon hairspring and 48-hour power reserve Dimensions: 27.5mm x 2.53mm Number of parts: 161
Dating from 1977, the 240 has been updated over the years and today features the Spiromax (silicon) balance spring, which offers precision in operation and manufacture as well as resistance against magnetic fields. At its simplest, the 240 drives several of Patek Philippe’s time-only watches such as the Ref. 7200R ladies’ Calatrava.
That said, the 240 was designed as a base calibre to accommodate complication modules while retaining a slim profile. In Patek Philippe’s present catalogue, there exists no less than seven variants with an impressive array of complications, from the 240 HU with world time and day/night indication, 240 PS C with date hand and small seconds, up to the 240 Q offering moon phase and perpetual calendar! With the latter, the number of components had grown by more than 70 per cent, to 275 parts, and movement height increased from 1.61mm to 3.88mm. Because of the added energy required to drive these added components, power reserve had also dipped, but remains at an agreeable minimum of 38 hours.