Monday, July 4, 2016

Moritz Grossmann ATUM Pure M

Unveiled at Baselworld 2016, the ATUM Pure M unites three new features presented by the Grossmann manufacture: the version in steel, the specially conceived calibre 201.0 with the Pure Classic Finish, and the translucent dial with an insert composed of thin woven steel filaments.

The letter "M" stands for mesh, a steel fabric. In contemporary architecture, mesh façades express transparency and lightness. They expose the structure and the life inside it. The dial insert of the ATUM Pure M reveals pure watchmaking artistry from the front side as well. Among other elements, it offers a glance at the Grossmann manual winder with pusher. The stainless steel and black oxidised steel case versions each come in limited 50-watch editions.
In the ATUM Pure M, puristic form and precise function harmonise with the cool and modern appeal of steel. The very slender bezel is a striking element of the case design. Positioned adjacent to the crown, the pusher is a telltale sign of the proprietary Grossmann winder.
The face of the watch is significantly different: its translucent centre lets the calibre 201.0 shimmer through. Grossmann's designers conceived the dial. It is composed of six parts crafted on site in the manufacture. The crisp minute and seconds markers on the scale are a hallmark of the ATUM. Eight prominent hour markers are sculpted out of the minute ring. The hour ring features the numerals 9, 12, and 3 in a contemporary typography style. Light enters through the mesh dial insert, bringing out details of the heart of the watch. The seconds subdial, the logo bridge, and the hand bushings round out the elaborately designed dial. Both lancet-shaped hands are manually crafted from stainless steel and like the hour markers are filled with white "Hy-Ceram". 
A glance through the display back reveals the calibre 201.0 with the Pure Classic Finish. It was specially designed to be cased in stainless steel. The German silver plates are shot-peened with glass beads for enhanced aesthetic appeal. Shot peening matts the surface, making it highly sensitive. Great care must be taken in the assembly phase for this reason. The white sapphire jewels, a Grossmann hallmark, are pressed directly into the plate. The movement screws are polished flat and retain their original steel hue.
The characteristic Grossmann balance is paired with a hand-shaped flat hairspring that has two bends. Because the curb pin remains free, the adjuster curve can be accurately centred. Design modifications make it possible to adjust beat and rate separately without removing the oscillator. For this purpose, Grossmann's watchmakers positioned the rotatable stud holder in the balance cock such that it can be conveniently blocked. There is absolutely no play between the index adjuster, the stud holder, and the upper balance bearing. This allows the ATUM Pure M to be precisely adjusted at all times.

The ATUM Pure M is available with stainless steel and stainless steel DLC dianoir. They are limited to 50 watches per marker colour version

Technical details

Movement   
Manufacture calibre 201.0, manually wound, adjusted in five positions
Diameter: 36.4 mm, height: 5.0 mm
No. of parts: 187
Jewels: 20
Escapement: Lever escapement
Oscillator: Shock-resistant Grossmann balance with 4 inertia and 2 poising screws, Nivarox 1 balance spring
Balance: Diameter 14.2 mm, frequency 18,000 semi-oscillations per hour
Power reserve: 42 hours when fully wound
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

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

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

Case
Three-part, stainless steel or stainless steel DLC dianoir
Diameter: 41.0 mm, height: 11.35 mm
Crystal and display back: Sapphire crystal, antireflective coating on one side

Dial   
Six-part Brass rhodiumed, Mesh in stainless steel
Hands: Manually crafted, hour and minute stainless steel, polished, with white HyCeram filling, subsidiary second stainless steel, polished

Strap
Hand-stitched alligator strap with prong buckle in stainless steel

Versions
Reference: MG02.I-04-A000703
Case: Stainless steel
Dial: Six-part, rhodiumed, stainless steel mesh, marker with white HyCeram filling
Hands; Manually crafted, Polished,  stainless steel with white HyCeram filling
Diameter: 41,0 mm

Reference: MG02.I-06-A000587
Case: Stainless steel/DLC dianoir
Dial: Six-part, rhodiumed, stainless steel mesh, marker with white HyCeram filling
Hands: Manually crafted, Polished,  stainless steel with white HyCeram filling
Diameter: 41,0 mm
Calibre: MG 201.0
Limitation: 50 watches per marker colour version

Reference: MG02.I-04-A000688
Case: Stainless steel
Dial: Six-part, rhodiumed, stainless steel mesh, marker with blue HyCeram filling
Hands: Manually crafted, Polished, stainless steel with blue HyCeram filling

Reference: MG02.I-06-A000712
Case: Stainless steel/DLC dianoir
Dial: Six-part, rhodiumed, stainless steel mesh, marker with blue HyCeram filling
Hands: Manually crafted, Polished, stainless steel with blue HyCeram filling
Limitation: 50 watches per marker colour version

Reference: MG02.I-04-A000646
Case: Stainless steel
Dial: Six-part, rhodiumed, stainless steel mesh, marker with green HyCeram filling
Hands: Manually crafted, Polished, stainless steel with green HyCeram filling

Reference: MG02.I-06-A000706
Case: Stainless steel/DLC dianoir
Dial: Six-part, rhodiumed, stainless steel mesh, marker with green HyCeram filling
Hands    Manually crafted, Polished, stainless steel with green HyCeram filling
Limitation: 50 watches per marker colour version

Reference: MG02.I-04-A000709
Case: Stainless steel
Dial: Six-part, rhodiumed, stainless steel mesh, marker with orange HyCeram filling
Hands: Manually crafted, Polished, stainless steel with orange HyCeram filling

Reference: MG02.I-06-A000685
Case: Stainless steel/DLC dianoir
Dial: Six-part, rhodiumed, stainless steel mesh, marker with orange HyCeram filling
Hands: Manually crafted, Polished, stainless steel with orange HyCeram filling
Limitation: 50 watches per marker colour version

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