The Montblanc 1858 Geosphere is one of the key icons of the Montblanc 1858 line with its two domed turning hemisphere globes and in-house worldtime complication. Inspired by the explorations of legendary mountaineer Reinhold Messner, Montblanc unveils the new Montblanc 1858 Geosphere Limited Edition 1858 that pays tribute to his five-week solo trek across the Gobi desert in 2004. Reproducing the rocky terrain color scheme, the timepiece harmoniously combines a micro-blasted bronze case with a special engraving on the case back, a bi-directional shiny brown ceramic bezel, a smoked brown and beige lacquered dial, and a matching vintage-brown sfumato calf strap.
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Montblanc uses a very special technique to highlight the Gobi desert on the back of the watch giving it an authentic rendering in 3-dimensions, providing depth and realism as if it was a photograph. Made of titanium, the metal must first be structured, which means that the decoration will be engraved by laser, taking into consideration the relief of the drawing. Then the desired finish (matt and shiny) is also achieved by laser.
Finally comes the coloring phase. The colors are created with laser-generated oxidation. It is the level of oxidation that determines the final color obtained (and desired). Montblanc is one of the most advanced Swiss manufacturers to use this technology on such a large surface.
Special attention has been paid to the dial with smoked brown to beige. A lacquered finishing combined with warm rose gold-coated elements, such as hands and applied indexes, complete the overall design of this modern tool-style watch. For great readability, the day/night indicator, the cathedral-shaped hands, the indexes, the compass indications, and the hemisphere globes are all coated with beige-coloured Super-LumiNova that has been applied by hand.
The Montblanc 1858 Geosphere Limited Edition 1858 is powered by the Manufacture automatic Calibre MB 29.25. The timepiece has two domed turning hemisphere globes at six and 12 o’clock, which are surrounded by a fixed scale with the 24 time zones and include a rose gold-coated and brown day/night indicator (for both the Northern and Southern hemispheres). The longitude reference meridian for both hemispheres is highlighted with a black line coated with Super-LumiNova. Furthermore, a second time zone, used as a home time indication, is located at nine o’clock and a date aperture (linked to the local time) is located at three o’clock.
Movement Calibre: MB 29.25 with Manufacture world-time complication
Type of movement: Mechanical movement with automatic winding, world-time
Number of rubies: 26
Power Reserve: Approx. 42 hours
Balance: Flat hoop
Frequency: 28,800 A/h (= 4 Hz)
Displays: Hours and minutes from the centre, date at 3 o’clock, second time zone at 9 o’clock
Domed turning northern and southern hemisphere globes at 12 o’clock and 6 o’clock with a 24-hour scale and day-night indication
Case: Special alloy of bronze with slim curved horns featuring microblasted-finishing
Bi-directional bronze bezel with shiny brown ceramic, knurled finishing and engraved cardinal points coated with Super-LumiNova
Crystal: Scratch-resistant, domed sapphire, antireflective crystal
Back: Bronze-coated titanium with Gobi Desert landscape & wind rose compass special engravings
Diameter = 42 mm
Height = 12.8 mm
Lug-to-Lug = 52 mm
Water-resistance: 10 bar (100 m)
Crown: Special alloy of bronze with polished and fluted finishing with Montblanc emblem in relief
Dial: Smoked brown to beige, lacquered with rose-gold colored luminescent applied Arabic numerals, rose gold-and beige-colored luminescent cathedral-shaped hour-and minute-hands, beige-colored luminescent second time zone hand, beige-colored luminescent northern and southern hemispheres globes, historical Montblanc logo at 3 o’clock
Wristband: Brown sfumato calf leather strap with beige stitching and bronze-coated stainless-steel triple-folding clasp
Certified by the Montblanc Laboratory Test 500
Limited Edition: 1858 pieces
Price: 6000 CHF incl. VAT