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Montblanc 1858 Iced Sea Automatic Date 41mm Mens Watch
Ref. 129369
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Stepping up in Montblanc's range
A 41mm stainless steel case houses a navy dial finished using the gratté-boisé technique, which produces a textured glacial effect across the surface. The domed sapphire crystal sits above Arabic numerals and baton indices, both coated with Super-LumiNova, with a date window positioned at three o'clock. The unidirectional rotating bezel uses bi-colour ceramic construction. The case back carries a relief engraving of an iceberg and a diver. A tapered stainless steel bracelet with a fold-over clasp includes a fine-adjustment diving extension and a quick-change system for strap swapping without tools. Water resistance is rated to 300 metres to ISO 6425 standard, powered by the MB 24.17 automatic calibre with a power reserve of approximately 38 to 41 hours.
- Reference
- 129369
- Brand
- Montblanc
- Collection
- 1858
- Case size
- 41mm
- Case material
- Stainless steel
- Case shape
- Round
- Dial
- Blue
- Crystal
- Sapphire
- Bezel
- Unidirectional rotating
- Movement
- Automatic
- Calibre
- MB 24.17
- Functions
- Date
- Water resistance
- 300m
- Bracelet / strap
- Stainless steel bracelet
- Strap colour
- Silver
- Clasp
- Folding clasp
- Lume
- Super-LumiNova
- Retailer
- Goldsmiths
Learn more about Montblanc
Montblanc was founded in Hamburg in 1906 as a fountain pen manufacturer, and the six-pointed white star that marks its products represents the snow-capped summit of the mountain. It entered watchmaking in 1997, initially as a luxury accessory line.
That changed decisively in 2007, when Richemont transferred the Minerva manufacture in Villeret to Montblanc. Minerva, founded in 1858, was one of the great chronograph specialists — it had produced its own monopusher chronograph calibres since 1908, including movements capable of measuring to a hundredth of a second, and had continued making them by traditional methods long after the industry mechanised.
Montblanc inherited that capability along with the tooling, archives, and watchmakers. The Villeret and 1858 collections now house Minerva-derived calibres with their distinctive devil's tail chronograph bridges, screwed balance wheels, and hand-finished components — genuine high horology at a house most people associate with pens.
The volume side of the business, produced at Le Locle, covers the Heritage, Star Legacy, and TimeWalker lines, and the 1858 Geosphere with its twin rotating hemisphere globes has become the signature model.
Montblanc has also pursued smartwatches through the Summit range and remains part of Richemont.
- 1906
- Founded in Hamburg as a fountain pen manufacturer.
- 1997
- Watchmaking begins at Le Locle.
- 2007
- The Minerva manufacture at Villeret is transferred to Montblanc.
- 2018
- The 1858 Geosphere becomes the signature model.
Also in 6 collections
This watch appears in the Montblanc 1858 range (7), Stainless Steel Watches (3,088), Automatic Watches (1,763), Blue Dial Watches (841), Sports Watches (794) and Dive Watches (567).
Manufacturer’s guarantee
What the specifications mean
A mechanical watch built to be worn hard and got wet.
Strengths
- 300m water resistance, rated for actual diving
- Sapphire crystal, which resists scratching
- Luminous hands and markers for low light
- Sits in the lower half of Montblanc's range as we list it
Price history
This watch is currently at its highest recorded price. It was £3,120 on 10 August. Prices are checked every day, and we record any changes.
Montblanc 1858 Iced Sea alternatives
Watches from other brands at a similar price, style and size, so you can see what else your budget can buy.
| Specification |  129369 | L37954599 | SM40-DT-SS-BK-B |
|---|---|---|---|
| Price | £3,475 | £3,550 | £3,600 |
| Case size | 41mm | 42mm | 40mm |
| Water resistance | 300m | 300m | 300m |
| Movement | Automatic | Automatic | Automatic |
| Strap | Stainless steel bracelet | Stainless steel bracelet | Stainless steel bracelet |
| Power reserve | — | 72 hours | 50 hours |
| This watch | Closely matched | Closely matched |
Your new watch
Frequently asked questions, and things you should know about this watch
Can I swim with it?
Yes. At 300m it is rated for swimming, snorkelling and recreational diving.
Water resistance explainedWill the glass scratch?
Unlikely. Sapphire is second only to diamond in hardness and shrugs off everyday marking.
Sapphire, mineral and acrylic comparedDoes it need a battery?
No. It is automatic — the motion of your wrist winds it, and there is no cell to replace.
Quartz, automatic and solar comparedIs it a men's or women's watch?
Listed as men's.
Cheapest place to buy
Goldsmiths is the only UK retailer we track stocking this reference, so there is nothing to compare it against today.
Has the price changed recently?
It's currently at its highest recorded price. It's ranged between £3,120 and £3,475, today it's £3,475.
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