Throughout millennia, researchers and inventors strived to build a perpetual motion machine, a device that would continue to move indefinitely once started. Without any external source of power, it was believed that the machine itself would generate an unlimited amount of energy. It was only with the formulation of the law of conservation of energy in the middle of the 19th century that physics quashed the principle of perpetual motion. Nevertheless, people’s fascination for the concept remained unbroken.

Of course, the HAMATIC does not purport to be perpetual motion machine – after all, the first automatic watch from Moritz Grossmann draws its kinetic energy from an external source. A pendulum-style hammer weight skilfully uses the energy generated through the wearer’s movements to transfer it via the ratchet wheel to the mainspring in the barrel, meaning that an external energy source makes the dream of infinite motion come true. It’s therefore safe to say that the HAMATIC is one of the most beautiful and complex examples of would-be perpetual motion.

The calibre 106.0

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Tech Specs

Movement

Manufacture calibre 106.0, manually wound, adjusted in five positions

Special features

Grossmann balance; click pawl in reduction gear; adjustment with Grossmann micrometer screw on cantilevered balance cock; pillar movement with 2/3 plate and pillars made of untreated German silver, hand-engraved 2/3 plate and cantilevered balance cock; wide, horizontal Glashütte ribbing, double-band snailing on the mainspring barrel; raised gold chatons with pan-head screws; separately removable clutch winding mechanism; stop seconds for hand setting; automatic winding with oscillating hammer, bidirectional click wheels; idler with pawl clicks, manual yoke winder

Functions

Hours and minutes, subsidiary seconds with stop seconds

No. of parts

312

No. of jewels

38, of which 3 in screwed gold chatons

Escapement

Lever escapement

Oscillator

Shock-resistant Grossmann balance with 4 inertia and 2 poising screws, Nivarox 1 balance spring with No. 80 Breguet terminal curve, Gerstenberger geometry

Balance

Diameter 10.0 mm, frequency 21,600 semi-oscillations/hour

Power reserve

72 hours when fully wound

Operating elements

Crown for winding the watch, and setting the time

Case dimensions

Diameter: 41.0 mm, height 11.35 mm

Movement dimensions

Diameter: 36.4 mm, height: 5.15 mm

Case

Three-part, in 750/000 gold

Dial

Solid silver, opaline, with printed Roman numerals

Hands

Manually crafted, steel, annealed to a brown-violet hue

Crystal and display back

Sapphire crystal, antireflective coating on one side

Strap

Hand-stitched alligator leather with prong buckle in 750/000 gold

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