Montblanc MB128504 Geosphere 1858 LIMITED EDITION Automatic Watch Ref. 128504

The Montblanc 1858 product line is inspired by the professional Minerva watches from the 1920s and 1930s which were conceived for military use and exploration. Reinterpreting these historical timepieces, the Montblanc 1858 product line expresses the spirit of mountain exploration, embodying the modern trend of returning to nature. The Montblanc 1858 Geosphere Limited Edition 1858 is dedicated to the world’s Seven Summit mountaineering challenge, the holy grail of mountaineering adventures. It comes in a 42 mm bronze case combined with beige and contrasting brown design details, finding inspiration in the colors of the desert. The timepiece features a manufacture world-time complication developed by the Montblanc watchmakers in Villeret: two domed globes, turning in opposite directions, that complete a full rotation in 24 hours. Both are surrounded by a scale with the 24 time zones, along with a day and night indication in contrasting colors. This provides an instinctive way of appreciating the different time zones, aided by the luminescent continents for increased visibility and performance at night. The timepiece is completed with a brown Sfumato calf leather strap with beige stitching.

Ident No. MB128504



Movement TypeAutomatic, self-winding

Movement CaliberMB 29.25

Number of jewels26 Jewels

Balance springFlat hairspring



ComplicationsWorldtime with turning northern and southern hemisphere globes, 24-hour scale and day/night indication; Dual time indication; Date by disc



Case MaterialBronze

DialSmoked brown to beige dial with luminescent rose gold-coated Arabic numerals and indexes

BezelBi-directional turning bezel

Anti-Scratch CrystalYes

Crystal ShapeDomed

Crystal DescriptionDomed sapphire crystal with double anti-reflective coating

Crystal TypeSapphire

CrownFluted bronze with Montblanc emblem in relief

Distance Between Horns22 mm

Bezel colorBrown


Water Resistant10 bar (100 m) bar

Bracelet ColorBrown

Case Diameter42 mm

Bezel MaterialBonze-ceramic

Contact us for availability and all pricing inquiries.