Moritz Grossmann expands its ATUM family of classic mechanical watches by introducing a new model, the ATUM Date.
The date indication, a complication coveted and often discussed by watch enthusiasts, is a comparatively recent development in the long history of precision watchmaking. The first wristwatches with an analogue date were only just introduced in the early 20th century. For their date display in the ATUM Date, Grossmann's watchmakers adopted this classic format as well. A full date scale and an unusually shaped bracket marker emphasise the elegance and functionality of the model family. The jumping date combines a precisely legible display with mechanical ingenuity and a rare degree of convenience.
On the solid-silver dial, the minute scale is shifted inward to provide space for the complete date scale from 1 to 31. The blue date numerals clearly contrast against the applied hour markers. To avoid competition with the hour and minute hands, the date indicator points to the date from the circumference instead of from the centre. Lavishly finished by hand, the bracket-shaped date marker is annealed to a brown-violet hue to contrast against the blue date numerals. The ATUM Date is fitted with the typical lancet-style hands. In the manufacture, they are crafted, finished, and annealed to a brown hue to match the rose-gold case. For the white-gold model, all hands are made of polished stainless steel.
With the complete date scale in both versions, the ATUM Date delivers an impressive sense of the progression of days. The ATUM Date is presented in rose-gold and white-gold versions.
Manufacture calibre 100.3, manually wound, adjusted in five positions
No. of parts: 259
No. of jewels: 26, 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 14.2 mm, frequency 18,000 semi-oscillations per hour
Power reserve: 42 hours when fully wound
Special features: Grossmann balance; hand-setting override and start of movement with lateral pusher; precisely jumping date display with a peripheral marker; bidirectional date adjustment with a separate crown at 10 o'clock; 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 handsetting
Movement dimensions: Diameter: 36.4 mm, height: 7.56 mm
Hours and minutes, subsidiary seconds with stop seconds, date display, Grossmann manual winder with pusher
Two crowns in 750/000 gold to wind the watch and set the time and the date, pusher in 750/000 gold to start the watch
Three-part, precious metal
Diameter: 41.0 mm, height: 11.85 mm
Crystal and display back: Sapphire crystal, antireflective coating on one side
Solid silver, hour markers in gold
Hands: Manually crafted, in steel or stainless steel
Hand-stitched alligator strap with prong buckle in precious metal
Case: 750/000 rose gold
Hands: Manually crafted, steel annealed to a brown hue
Case: 750/000 white gold
Hands: Manually crafted, polished stainless steel
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