In a new rectangular design

CORNER STONE

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The watch strikes four times at the top of the hour. Four seasons form a complete cycle. The new CORNER STONE model from independent watchmaker Moritz Grossmann, which will be presented to the press in Tokyo on 7 March, has four corners. If you pronounce the English term “corner stone” in Japanese, the words curiously sound very similar in both languages: “Kōnāsutōn”. In Japanese script it looks like this: コーナーストーン

Grossmann Uhren GmbH wants to draw on this wonderful similarity between the two cultures and languages by naming the new model with the innovative rectangular design CORNER STONE. It is Grossmann’s first watch in this design variant that is particularly popular on the Japanese market. The new calibre 102.3 was specially designed for the rectangular movement shape with a small second scale at 6.00 o’clock and a central hour and minute display.

The flat case of the CORNER STONE with the curved lugs nestles perfectly on the wrist of both ladies and fashion-conscious men and always makes an elegant statement.

The calibre 102.3

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Tech Specs

Movement

Manufactory calibre 102.3, manual winding, regulated in five positions

Special features

Grossmann balance; 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; 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 winding mechanism; stop seconds for hand setting

Functions

Hour and minute, small second with stop seconds

No. of parts

189

No. of jewels

24 jewels, of which 2 in screwed gold chatons

Escapement

Lever escapement

Oscillator

Shock-resistant Grossmann balance with 4 inertia screws and 2 poising screws, Nivarox 1 balance spring

Balance

Diameter: 10.0 mm, frequency: 21,600 semi-oscillations per hour

Power reserve

60 hours when fully wound

Operating elements

Crown in 750/000 gold for winding the watch and setting the time

Case dimensions

46.6 mm (length) x 29.5 mm (width) x 9.76 mm (height)

Movement dimensions

30.0 mm (length) x 20.0 mm (width) x 3.6 mm (height)

Dial

Solid silver painted or Grand-feu enamel, indices made from gold

Hands

Manually crafted, stainless steel, annealed in brown-violet for two variants and polished

Glass and caseback

Sapphire crystal, antireflective coating on one side

Strap

Hand-stitched alligator leather with prong buckle in precious metal

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CORNER STONE

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