As was the case with the ATUM Pure M and L, the face of the watch features two prominently designed rings for the minute and hour indications.
In place of the “Mesh” and “Long Hole” dial inserts, the ATUM Pure Skull showcases a stylised skull in its centre.
The skull
The skull is milled and wire-cut with electrical discharge machines in the manufacture, its surface polished or sandblasted to match the case, and then assembled with the remaining dial elements. This individualised manufacturing approach lends itself to dials with other popular motifs or heraldic symbols.
The hands
Special hands are manually crafted in-house for the ATUM Pure Skull. Designed to match the markers, the lancet-style hands feature straight edges and broad chamfers that contribute to their slender yet corporeal looks. They are made of stainless steel that retains its remarkable toughness after tempering. To optimise legibility, pockets are worked into the hands and then filled with black “Hy- Ceram“, a compound that consists of ceramic powder and resin. Then, the tips of the hands are precision ground. Finally, they are polished to a mirror gloss, including the white fillings.
Tech Specs
Movement
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
Functions
Hours and minutes, subsidiary seconds with stop seconds, Grossmann winder with pusher
No. of parts
187
No. of jewels
20 jewels
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
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
Case
Three-part, stainless steel
Dial
hour markers stainless steel, rhodiumed
Hands
Hand-crafted, hour and minute stainless steel, polished, with black HyCeram filling, subsidiary second stainless steel
Crystal / display back
Sapphire crystal, antireflection-coated on one side
Strap
Hand-stitched alligator strap with prong buckle in stainless steel