Moritz Grossmann Power Reserve Vintage

Presented as part of the international Moritz Grossmann Road show 2019 in London on 11 July, the POWER RESERVE Vintage timepiece boasts a vintage styled dial featuring historical original logo lettering of the Grossmann watches of the 19th century.

Presenting the first model of the newly founded independent Glashütte watch manufactory Moritz Grossmann in 2010, Christine Hutter saw a 125-year-old dream come true. The dream of manufacturing mechanical watches to the highest standards of craftsmanship in the spirit of the visionary and watchmaking genius Moritz Grossmann in Glashütte again.

To mark the occasion, the manufactory’s designers devised a new logo – two straight lines at the bottom and a semicircle segment at the top framing the Moritz Grossmann i/Sa lettering. These lines precisely indicate the shape of the lower edge of the characteristic Grossmann two-thirds plate, typically used by Moritz Grossmann in his pocket watches and which, thanks to recesses in the movement, allow a view of the balance.

To commemorate the revival of the brand and pay tribute to the inventor, visionary and master craftsman Moritz Grossmann, a traditional version of this wristwatch is now being released. The POWER RESERVE Vintage features a historic dial in argenté echoing Moritz Grossmann’s classic pocket watches with finely crafted Roman numerals in black and the original logo featuring the ‘M. GROSSMANN’ typography from 1875 grace the dial paying tribute to the master, as he was respectfully called in Glashütte.

The hands of the new model also take their inspiration from the 19th-century examples of Moritz Grossmann’s pocket watches. The pear-shaped tip of the hour hand forms a beautiful contrast to the wafer-thin, needle-like shape of the minute hand, measuring a mere 0.1 millimetre at its narrowest point.

Only the second hand with a twentieth of a millimetre diameter at its peak surpasses the filigree appearance. As with all Grossmann hands, these display instruments are also handcrafted in the manufactory and manually annealed over an open flame. Kept in blue, the hands harmonise with the blue/white power reserve indicator.

The calibre 100.2 of the POWER RESERVE Vintage uses Grossmann’s manual winding with a pusher, a cantilevered balance cock with Grossmann micrometer screw, a separately removable winding module and the mass optimized Grossmann balance. The calibre 100.2 is an extension of the calibre 100.1. It includes an additional gearbox to indicate the power reserve. This differential gear is located below the ratchet wheel – as in the historic Glashütte observation watches. The stopwork was moved upwards between the crown wheel and the ratchet wheel.

A segment mounted in the centre of the calibre drives the output of the gearbox, creating a two-coloured bar display below the logo to indicate the remaining power reserve. This shows the watch’s remaining running time. When the mainspring is fully wound, the bar is completely white and turns increasingly blue as the power reserve decreases. The bar complements the dial with its slim, filigree style. A sapphire crystal back on the reverse of the watch reveals the intricately finished parts in the POWER RESERVE Vintage, showcasing the finest German craftsmanship from the Moritz Grossmann manufactory.

The POWER RESERVE Vintage is available in white gold and rose gold.

Versions

Reference: MG-002269
Case: 750/000 rose gold
Dial: argenté, Roman numerals
Hands: manually crafted, steel, annealed to a blue hue

Reference: MG-002270
Case: 750/000 white gold
Dial: argenté, Roman numerals
Hands: manually crafted, steel, annealed to a blue hue

Technical details

Movement
Manufacture calibre 100.2, manually wound, adjusted in five positions
Diameter: 36.4 mm, height: 5.4 mm
No. of parts: 227
No. of jewels: 26 jewels, 3 of which in screwed gold chatons
Escapement: Lever escapement
Oscillator: Shock-absorbed Grossmann balance with 4 inertia and 2 poising screws, Nivarox 1 balance spring with No. 80 Breguet terminal curve, Gustav Gerstenberger geometry
Balance – Diameter: 14.2 mm, frequency: 18,000 semi-oscillations per hour
Power reserve: 42 hours when fully wound

Functions
Hours and minutes, subsidiary seconds with stop seconds, Grossmann winder with pusher, power reserve indicator

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

Case
Three-part, precious metal
Diameter: 41.0 mm, height: 11.65 mm
Crystal/display back: Sapphire crystal, antireflective coating on one side

Dial
Solid silver, argenté, with Roman numerals
Hands: Manually crafted, steel, annealed to a blue hue

Strap
Hand-stitched alligator strap with prong buckle in precious metal

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 a cantilevered balance cock; pillar movement with 2/3 plate and frame pillars in 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

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