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Montblanc
1858 Geosphere
$6,300
Sold-out limited-edition dual-timezone world-time watch inspired by 1930s expedition chronometers. A current 0 Oxygen version of the Geosphere (MB133303, ~$8,600) remains in production as its spiritual successor.
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- Collection
- 1858
- Reference number
- 117840
- Case material
- Bronze
- Case diameter
- 42 mm
- Case thickness
- 12.8 mm
- Lug width
- 22 mm
- Lug-to-lug
- 52.3 mm
- Movement
- Automatic
- Caliber
- MB 29.25
- Water resistance
- 100 m
- Release year
- 2018
- Country of origin
- Germany
Wrist size visualizer
Case diameter and lug-to-lug drawn to scale (4px per mm) against a millimeter ruler — hold a ruler or tape measure up to the screen to compare.
mm circumference
Lug-to-lug (52.3mm) is approximately 97% of your estimated flat wrist width (54mm). May overhang the sides of your wrist.
Price History
Up 10.5% ($600) since 10/3/2026.
Low $5,700 · High $6,300
- 10/5/2026$6,300▲ $600
- 10/3/2026$5,700
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