The Wristwatch Field Guide

Montblanc 1858 Geosphere 42mm Titanium (bracelet)

125567 Archive · used only

The Montblanc 1858 Geosphere 42mm Titanium (bracelet) is a discontinued other watch with a grey grade 5 case, finished with satin and polished; ceramic bezel. It measures 42.0 mm across, 12.8 mm thick, and is water resistant to 100 m. Inside is the Montblanc MB 29.25 automatic (worldtime) movement, with 42 h power reserve. Complications: Worldtimer, Date. Priced from $6,900 (EUR 5,900). Brand origin: Germany. No longer offered new; listed here as an archive reference for the used market.

Titanium and ceramic other watchesTitaniumDisplay back
Reference
125567
Type
Other
Price
$6,900 · EUR 5,900
Case diameter
42.0 mm
Thickness
12.8 mm
Lug-to-lug
Water resistance
100 m
Weight
Origin
Germany
Movement
Automatic (worldtime)
Caliber
Montblanc MB 29.25
Power reserve
42 h
Complications
Worldtimer, Date
Material
Titanium
Grade / type
Grade 5
Colour
Grey
Hardness
Construction
Surface treatment
Satin and polished; ceramic bezel
Caseback
Titanium
Nickel-free
No (steel contact)
Bracelet / strap
Titanium and steel bracelet
Matching bracelet
Standard
Crystal
Sapphire
Display back
Yes
Dial
Blue
Lume
Super-LumiNova
Availability
No longer offered
Status
Discontinued (no live maker page; line moved to 1858 Geosphere 0 Oxygen)
Medium confidence Verified Jul 2026 Source: Montblanc Maker / listing ↗
Facts are free to cite with a link.
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Frequently asked questions

Is the Montblanc 1858 Geosphere 42mm Titanium (bracelet) nickel-free?

No. At least one part that touches the skin is nickel-bearing steel (commonly the caseback or clasp), so the guide does not mark it nickel-free.

What is the case material of the Montblanc 1858 Geosphere 42mm Titanium (bracelet)?

The Montblanc 1858 Geosphere 42mm Titanium (bracelet) has a grey grade 5 case with a titanium caseback. It is recorded at medium confidence pending a maker-stated material.

What size is the Montblanc 1858 Geosphere 42mm Titanium (bracelet)?

It is 42.0 mm in diameter, 12.8 mm thick, and water resistant to 100 m.

How much does the Montblanc 1858 Geosphere 42mm Titanium (bracelet) cost, and is it available?

It is no longer offered new; the guide keeps it as an archive reference for the used market, and it listed from $6,900 when current.

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