ATUM Backpage Roségold

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A showcase for the art of Grossmann watchmaking

The renowned German watchmaker Moritz Grossmann celebrates its tenth anni-versary in November. To mark this special occasion the independent watchmaker from Glashütte is pleased to reveal its eighth special model, the ATUM Backpage. This rose gold single edition piece offers a showcase for Grossmann’s beautiful watchmaking art.

With the exception of the delicate minute scale on the rim of the watch face the dial is completely exposed enabling spectators to admire all the beautifully intri-cate details of the movement.

The ATUM Backpage Rose Gold’s artistically handcrafted movement has been mirrored and shifted to the dial side by Moritz Grossmann’s master watchmakers. Thanks to an unexpectedly large dial cut-out, the characteristic movement details such as Grossmann’s balance wheel, a hand-engraved balance cock and three band snailings on the ratchet wheel can be fully observed while on the wrist. Wide Glashütte stripes are applied to both sides of the movement and the Moritz Grossmann logo is hand engraved on the dial side. Brown hands, tempered in the manufactory, and brown-violet screws complete the elegant and warm colour scheme of this extraordinary watch.

On the back of the movement, the winding, hand setting and second mechanisms are openly integrated into the wheel bridge and can be observed for the first time in a Moritz Grossmann timepiece in their full functionality. Almost all parts if the movement are mirrored in order to guarantee their function even when mounted in the opposite position while the lever remains unchanged.

The Moritz Grossmann brand manufactures timepieces to the highest standard of craftsmanship under the motto ‘Schönstes deutsches Handwerk’ — The most beautiful German craftsmanship. The ATUM Backpage Rose Gold is offered with the calibre 107.0 in artistic hand finish as a single edition 1 of 1.

Moritz Grossman is working on something very special. Details regarding purchase options for the ATUM Backpage Rose Gold will be published in the coming weeks.

The calibre 107.0

Discover everything about the heart of the ATUM Backpage rose gold.

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技術仕様

Movement

Manufacture calibre 107.0, manually wound, adjusted in five positions

Special features

Shock-resistant balance with inertia and poising screws, impulse pin integrated in rim; flat balance spring; balance staff with integrated safety roller; index adjuster with Grossmann micrometer screw; plate movement with 2/3 plate on dial side, frame pillars and separately removable clutch winding mechanism; visible handsetting train on the back side of the movement; frame parts in untreated German silver; Grossmann winder with pusher and stop seconds; raised gold chatons with pan-head screws; remodified Glashütte stopwork with backlash; mainspring barrel with bilateral jewel bearings for optimised power management in the low-torque range; ARCAP train wheels; proprietary escapement with 18-tooth escape wheel; balance cock and crown wheel, intermediate winding wheel and ratchet wheel with stopwork on the modified spring barrel bearing with a gold chaton in the ratchet wheel; dial train wheels spoked and beveled, beneath polished bridge

Functions

Hours, minutes, and subsidiary seconds with stop seconds, Grossmann winder with pusher

No. of parts

230

No. of jewels

24, of which 7 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/hour

Power reserve

42 hours when fully wound

Operating elements

Crown in rose gold, for winding the watch and setting the time, pusher in rose gold for starting the movement

Case dimensions

Diameter: 41.0 mm, height 11.35 mm

Movement dimensions

Diameter: 36.4 mm, height 5.0 mm

Case

Three-part, rose gold 750/100

Hands

Manually crafted, steel, annealed to a brown hue

Crystal / display back

Sapphire crystal, antireflective coating on one side

Strap

Hand-stitched alligator strap with prong buckle in rose gold 750/1000

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ATUM Backpage Roségold

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