The Montblanc 1858 Geosphere Ref. 117840 is a bold and highly collectible piece from Montblanc’s vintage-inspired 1858 collection. Limited to just 1,858 pieces worldwide, this watch pays tribute to global exploration and Montblanc’s alpine heritage, housed in a rugged 42mm bronze case with a black dial and rotating hemispheres for world time. Powered by the Montblanc Caliber MB 29.25 automatic movement, it features a dual-time zone layout with a 24-hour day/night indicator, rotating globe displays, and a date window. The ceramic compass bezel, cathedral hands, and aged brown leather bund strap round out its adventure-ready styling. This example comes with the original Montblanc box and papers, and is ideal for collectors looking for a functional and visually unique travel watch. Key Features: Model: Montblanc 1858 Geosphere Limited Edition Reference: 117840 Case Size: 42mm Case Material: Bronze with Titanium Caseback Bezel: Bi-directional Compass Bezel with Ceramic Insert Dial: Black with Dual Rotating Hemisphere Discs (World Time), GMT subdial, Date at 3 o'clock Movement: Montblanc Caliber MB 29.25 (Automatic) Power Reserve: 42 Hours Crystal: Domed Sapphire with Anti-Reflective Coating Caseback: Engraved Titanium with Limited Edition Number Strap: Brown Sfumato Aged Leather Bund Strap (Montblanc Pelletteria) Water Resistance: 100 meters / 330 feet Box: Yes Papers: Yes Year: Circa 2018 Condition: 8.5/10