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PARMIGIANI Tonda 1950 Lune

The machinery inside a watch that keeps things ticking is called the movement or a calibre. A synonym of size, the word ‘calibre’, first used as a watchmaking term in 1715, originally referred to the build of a watch movement—the layout, dimensions, shape and size of the wheels, barrels, bridges and so on. Today the word is a substitute for movement, the complete mechanism with the mainspring, escape wheel, bridges, gear train, and other components, including the rotor in automatic watches. Calibres are either mechanical or quartz-based. While the latter are powered mostly by a battery, the former can either be manual winding, or self-would by an oscillating mass or rotor.

SKU: PFC284-0001400-XA1442 Category:

The Calibre PF318 is an automatic-winding mechanical movement. Its two series-coupled barrels ensure 50 hours of autonomous and exceptionally regular operation. Its pendulum beats at a frequency of 28,800 vibrations per hour. Comprised of 205 components, this calibre combines the display of hours, minutes, seconds and the date with the lunar phases. Its moon-phase mechanism is driven by a gear set in motion by the hour wheel, which turns twice as slowly as the former does. Thus, once every 24 hours this gear drives the moon disk by means of a flexible blade integrated into the centre of its wheel.