The independent Glashütte manufactory Moritz Grossmann will be taking part in the eighth Only Watch charity auction on 9 November 2019 in Geneva with a superb unique timepiece based on a historical model.

Under the patronage of His Serene Highness Prince Albert II of Monaco, Only Watch auctions exclusive unique watches from prestigious manufacturers every two years in aid of the Association Monégasque contre les Myopathies. The proceeds will be used to treat children suffering from muscular dystrophy and to advance research into the hereditary neuromuscular disease, which is currently considered incurable.

‘Participating in Only Watch is a matter close to our hearts at Moritz Grossmann’, emphasises Christine Hutter. ‘This is exactly what I wanted to express with my signature on the collector’s item. Our manufactory would like to contribute to helping children suffering from Duchenne. We have created a piece of schönstes deutsches Handwerk with a great deal of passion and hope to inspire all watch lovers with this piece’.

The Calibre 100.2

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Tech Specs


Manufactory calibre 100.2, manual winding, regulated in five positions

Special features

Grossmann balance; hand setting override and start of movement with lateral pusher; bar-shaped power-reserve indicator with two-coloured display segment driven by a differential wheel train; space-saving modified Glashütte stopwork with backlash; adjustment with Grossmann micrometer screw on cantilevered balance cock; pillar movement with 2/3 plate and pillars made of untreated German silver; 2/3 plate, balance cock and escape-wheel cock hand-engraved; broad horizontal Glashütte ribbing; 3-band snailing on the ratchet wheel; raised gold chatons with pan-head screws; separately removable clutch winder; stop seconds for hand setting


Hours and minutes, subsidiary seconds with stop second, Grossmann manual winder with pusher, power-reserve indicator

No. of parts



26 jewels, of which 3 in screwed gold chatons


Lever escapement


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


Diameter: 14.2 mm, frequency: 18,000 semi-oscillations per hour

Power reserve

42 hours when fully wound

Operating elements

Crown in 750/000 gold to wind the watch and set the time, pusher in 750/000 gold to start the watch

Case dimensions

Diameter: 41.0 mm, height: 11.65 mm

Movement dimensions

Diameter: 36.4 mm, height: 5.4 mm


Three-part, precious metal


Solid silver, rhodié, with Roman numerals


Manually crafted, steel or stainless steel, blue annealed

Crystal/display back

Sapphire crystal, antireflective coating on one side


Hand-stitched alligator leather with solid prong buckle in precious metal

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