A unique colour combination with a surprise beneath

ATUM Pure M Orange


Moritz Grossmann, the independent from watchmaker Glashütte, is celebrating its 10th anniversary this month. To mark the occasion, the company presents its 7th one-off piece, the ATUM Pure M Orange.

Even in the 19th century, Moritz Grossmann experimented with the finish of his pieces, creating a range a styles to suit all tastes. Today, the ATUM Pure M Orange pays homage with nickel silver plates which have been glass bead-blasted to create a matte finish. The highly sensitive surface demands maximum precision and skill from the watchmaker. White sapphires, typical of Moritz Grossmann are pressed directly into the plate secured by flat polished steel screws.

With a blackened stainless steel case in combination with an orange alligator strap, the ATUM Pure M Orange has a sporty touch with surprises beneath. The dial is crafted from delicate filigree steel, offering an eye-catching view into the movement.

The unique lance-shaped hands match the indexes with orange HyCeram, matching the dial’s eight orange indexes with black Arabic numerals to mark the hours. At 6 o’clock, the small second shimmers in silver thanks to the evenly applied cut.

The Moritz Grossmann brand manufactures timepieces to the highest standard of craftsmanship under the motto “Schönstes deutsches Handwerk”. The ATUM Pure M Orange is offered with the calibre 201.1 in a pure classic finish as a single edition 1 of 1.

Moritz Grossman is working on something very special. Details regarding purchase options for the ATUM Pure M Orange will be published in the coming weeks.

The calibre 201.1

Discover everything about the heart of the ATUM Pure M Orange.

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Tech Specs


Manufacture calibre 201.0, manually wound, adjusted in five positions

Special features

Grossmann balance; handsetting override and start of movement with lateral pusher; 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; separately removable clutch winding mechanism; stop seconds for handsetting


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

No. of parts


No. of jewels

20 jewels


Lever escapement


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


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

Power reserve

42 hours when fully wound

Operating elements

Crown for winding the watch and setting the time, pusher to start movement

Case dimensions

Diameter: 41.0 mm, height: 11.35 mm

Movement dimensions

Diameter: 36.4 mm, height: 5.0 mm


Three-part, stainless steel or stainless steel black


Six-part, rhodiumed, Mesh inlet in stainless steel


Manually crafted, hour and minute stainless steel, polished with orange HyCeram filling, subsidiary second stainless steel, polished

Crystal / display back

Sapphire crystal, antireflection-coated on one side


Hand-stitched alligator strap with prong buckle in stainless steel

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ATUM Pure M Orange

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