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Fortis Steel 42mm Automatic 647.10.11M.BI new
TOP
Fortis Official Cosmonauts DAY-DATE 647 Blue Impulse 50 pieces...
£1,668
Free shipping
Verified Dealer
89
JP
Fortis Steel 42mm Automatic 638.10.11M.BI new
TOP
Fortis Officail Cosmonauts Chronograph 638 Blue Impulse 50...
£2,729
Free shipping
Verified Dealer
89
JP
Fortis Steel 42mm Automatic 401.21.11M new
TOP
Fortis Classic Cosmonauts Steel p.m.
£2,275
Free shipping
Verified Dealer
89
JP
Fortis Steel 40mm Automatic 901.20.165 new United Kingdom, Leicester
Fortis Terrestis
£995
Free shipping
Verified Dealer
151
UK
Fortis Steel 42mm Automatic 635.10.141.3 pre-owned United Kingdom, Warrington
Fortis B-42 Flieger
£1,267
Private Seller
 
UK
Fortis Titanium 44mm Automatic 647.28.158 pre-owned
TOP
Fortis B-42 Cosmonaut Day-date Automatik Titan Herrenuhr Ref....
£1,079
Verified Dealer
3367
DE
Fortis Steel 42mm Automatic 401.26.31 pre-owned
Fortis Stratoliner 401.26.31
£1,398
Free shipping
Verified Dealer
1154
US
Fortis Steel 37mm Automatic pre-owned
Fortis Incabloc 21 Jewels Swiss Automatic Stainless Steel...
£160
Verified Dealer
133
US
Fortis Steel 40mm Automatic 595.10.46.1 new
TOP
Fortis Flieger
£453
Private Seller
 
US
Fortis Steel 42mm Automatic Marinemaster pre-owned United Kingdom, Bishop’s Stortford
Fortis Marinemaster
£299
Private Seller
 
UK
Fortis 32.5mm Manual winding pre-owned United Kingdom, BRISTOL
Fortis Cal. Venus 180
£199
Private Seller
 
UK
Fortis 42mm Automatic 635.22L08 pre-owned United Kingdom, leicester
Fortis B42 Chronograph
£1,500
Private Seller
 
UK
Fortis 40mm Manual winding pre-owned United Kingdom, Bath
Fortis Chronograph
£970
Private Seller
 
UK
Fortis Steel 42mm Automatic 655.18.158 pre-owned
TOP
Fortis B-42 Day-date Automatik Edelstahl Herrenuhr Ref....
£1,172
Verified Dealer
3367
DE
Fortis Steel 36mm Manual winding pre-owned United Kingdom, BRISTOL
Fortis Chronograph
£899
Private Seller
 
UK
Fortis Steel 42mm Automatic 656.10.28 pre-owned
Fortis : Aeromaster Old Radium Chronograph : 656.10.28 : ...
£1,374
Verified Dealer
636
US
Fortis Gold/Steel 38mm Quartz 576.36.120 pre-owned United Kingdom, Addlestone
Fortis Quartz chronograph alarm
£295
Private Seller
 
UK
Fortis Steel 40mm Automatic 800.20.80 L.01 pre-owned
Fortis Marinemaster Chronograph LE
£2,205
Free shipping
Verified Dealer
31
US
Fortis Steel 46mm Automatic B-47 pre-owned United Kingdom, Sutton
Fortis B47 World Timer GMT 674.21.163 Steel & Black 46mm...
£956
Verified Dealer
811
UK
Fortis Steel 40mm Automatic 597.10.141 pre-owned
Fortis Flieger
£884
Private Seller
US
Fortis Steel 40mm Automatic new
Fortis 624.22.148 GMT Spacematic Pilot's Matte Steel 40mm...
£1,083
Verified Dealer
168
US
Fortis 37mm Automatic 9001 pre-owned
Fortis Flipper 37mm 200m Black White Fiberglass Automatic...
£280
Verified Dealer
17
US
Fortis Steel 40mm Automatic 595.11.16 pre-owned
Fortis Flieger Cockpit Black Green 40mm 595.11.16 M COMPLETE SET
£666
Free shipping
Verified Dealer
176
US
Fortis Titanium 45mm Automatic 647.28.81 K pre-owned
Fortis B-42 Black
£1,159
Private Seller
 
US
Fortis Steel 41.0mm Automatic 704.21.18 pre-owned
Fortis Cockpit One
£678
Private Seller
 
US
Fortis 43mm Automatic 701.20.11 L.01 pre-owned
Fortis F-43 Chronograph
£1,438
Private Seller
 
US
Fortis 42mm Automatic 401.26.141 pre-owned
Fortis Cosmonauts Stratoliner All Black Limited Edition on Strap
£2,557
Private Seller
 
US
Fortis Steel 42mm Automatic 647.10.11 M pre-owned
Fortis B-42 Official Cosmonauts
£919
Private Seller
 
US
Fortis Steel 42mm Automatic 401.21.12 pre-owned
Fortis B-42 Official Cosmonauts Fortis Classic Cosmonauts...
£1,438
Private Seller
 
US
Fortis Steel 40mm Automatic new
Fortis 595.22.158.1 Ducati Day Date Steel 40mm Leather...
£659
Verified Dealer
168
US
Fortis Steel 42mm Automatic 671.24.14K new
TOP
Fortis B-42 MARINEMASTER YELLOW CHRONOGRAPH
£2,578
Free shipping
Verified Dealer
89
JP
Fortis Steel 36mm Quartz pre-owned
Fortis Container System
£40
Private Seller
 
US
Fortis 40mm pre-owned
Fortis Cosmonautis SPACEMATIC STEALTH 40mm Automatic Swiss ETA...
£879
Private Seller
 
US
Fortis Steel 44mm Automatic 232.10.44 pre-owned
Fortis 1980s Hi-fi-matic 200m 44mm Cal 2790-1 Day Date Rare...
£2,197
Verified Dealer
17
US
Fortis Steel 41mm Automatic 904.21.173 new
Fortis Tycoon
£999
Private Seller
 
US
Fortis Steel 42mm Automatic pre-owned
Fortis Men's Fortis Marinemaster Super-Compressor 42mm...
£1,758
Free shipping
Verified Dealer
724
US
Fortis 40mm Automatic 800.20.85 new
Fortis MarineMaster Vintage Chronograph Limited Ed. 800.20.85...
£2,157
Verified Dealer
65
US
Fortis Steel Automatic 669.10.31K new
Fortis NEW 669.10.31K B-42 Calculator GMT @ KENJO NYC
£1,509
Verified Dealer
76
US
Fortis Steel 40mm Automatic new
Fortis 596.10.148 Pilot's Matte Stainless Steel 40mm Automatic...
£603
Verified Dealer
US
Fortis Steel 39mm Automatic 206.10.45 pre-owned
Fortis Brainmatic Self Winding Origina Hulkl Green Dial...
£958
Free shipping
Verified Dealer
147
US
Fortis Steel 34mm Manual winding
Fortis 1970s Vintage Fortis 400 Mens Divers Watch
£1,278
Verified Dealer
140
US
Fortis Steel 42mm Automatic B-42 Flieger pre-owned
Fortis B-42 Flieger Chronograph Day Date 42mm Swiss Valjoux...
£1,594
Verified Dealer
154
US
Fortis Steel 39mm Automatic 607.22.170 pre-owned
Fortis COSMONAUTS CHRONOGRAPH CHRONOGRAPH STEEL AUTOMATIC...
£3,995
Verified Dealer
24
US
Fortis Steel Manual winding new
Fortis Easy-Math Slide Rule Wind Rose Super Compressor Watch
£1,275
Verified Dealer
97
US
Fortis Steel 42mm Automatic pre-owned
Fortis Men's Marinemaster Super-Compressor 42mm Automatic,...
£1,758
Free shipping
Verified Dealer
724
US
Fortis Steel 42mm Automatic 655.18.98.L.01 new
Fortis B-42 Aeromaster Dusk Automatic Day/Date Steel Mens...
£599
Free shipping
Verified Dealer
552
US
Fortis Steel 42mm Automatic B-42 Marinemaster pre-owned
Fortis B-42 Automatic Marinemaster Watch 670.17.158
£1,035
Free shipping
Verified Dealer
 
US
Fortis Steel 40mm Automatic new
Fortis 626.22.159 Eco Spacematic Stainless Steel 40mm Automati...
£603
Verified Dealer
168
US
Fortis Rose gold 34.5mm Manual winding pre-owned
Fortis --- Vintage 18k Rose Gold Watch With Beautiful Fancy Lugs
£1,597
Verified Dealer
14
US
Fortis Steel Automatic 800.20.85 L new
Fortis Marinemaster Vintage, 800.20.85 L.05, Auto, Chrono, Lim Ed
£1,338
Free shipping
Verified Dealer
180
US
Fortis Steel 49mm Automatic B-42 Black pre-owned
Fortis B-42 Big Black Limited Edition 49mm Swiss Automatic...
£1,594
Verified Dealer
154
US
Fortis Steel 38mm Manual winding pre-owned
Fortis 38mm Valjoux 22 Chronograph 1940‘s
£2,419
Free shipping
Verified Dealer
17
CH
Fortis Steel 42mm Automatic 638.10.11 M new
Fortis B-42 Official Cosmonauts Chronograph
£2,950
Free shipping
Verified Dealer
445
DE
Fortis Steel 42mm Automatic 661.20.32 K new
Fortis Spaceleader Chronograph by Volkswagen Design
£1,302
Verified Dealer
6
DE
Fortis Steel 42mm Automatic 635.10.12 pre-owned
Fortis B-42 Flieger Chronograph DayDate
£1,256
Verified Dealer
 
DE
Fortis Steel Automatic 665.10.141 pre-owned
Fortis B-42 Stratoliner Stratoliner Chronograph Automatic
£1,363
Free shipping
Verified Dealer
398
JP
Fortis Steel 40mm Automatic new
Fortis 623.22.158 Spacematic Day Date Stainless Steel 40mm...
£603
Verified Dealer
168
US
Fortis Steel 40mm Automatic 901.20.11 LO new
Fortis Terrestris Hedonist
£1,293
Verified Dealer
14
ES
Fortis Steel 42mm Automatic 638.10.91.L01 new
Fortis B42 PC-7 Team Chronograph
£2,317
Verified Dealer
287
DE
Fortis Steel 42mm Automatic 638.10.11 pre-owned
Fortis B-42 Chronograph Fliegerchronograph 638.10.11
£1,767
Verified Dealer
1831
DE
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Fortis Watches: At Home Among the Stars

Swiss watch manufacturer Fortis is best known for their space-tested tool watches. They offer high-quality timepieces at fair prices. Top models include the Roscosmos-certified Official Cosmonauts Chronograph.


From Earth to Mars

Founded in Grenchen, Switzerland in 1912, Fortis has been closely associated with space exploration since 1962. It all began when the company supplied astronauts from the Gemini program with their then-new Spacematic. This relationship with space flight continues to this day. One of the most memorable moments came in 1992 when Fortis and cigarette manufacturer West collaborated on the "West in Space" marketing campaign.

Today, Fortis works closely with Russia's Roscosmos State Corporation for Space Activities. This partnership has given birth to the Official-Cosmonauts series, among other achievements. After having passed rigorous testing at the Yuri Gagarin Cosmonaut Training Center, Official Cosmonauts watches are permitted to bear the "Roscosmos" name. The Space collection contains the Classic Cosmonauts, Stratoliner, and Spacematic lines.

Despite initial impressions, Fortis doesn't spend all their time reaching for the stars. The manufacturer introduced their very first pilot's watch, the Jubilee, in 1952. Fortis still produces pilot's watches in their Sky collection. Both the Aeromaster and Pilot Classic models enjoy widespread popularity.

Fortis sources their calibers from Swiss movement manufacturer ETA. They then modify the movements in-house and assign them new names. Select calibers, such as the F-2012, come with chronometer certification from the Official Swiss Chronometer Testing Institute (COSC).

Reasons to Buy a Fortis Watch

  • A storied Swiss brand founded in 1912
  • High quality at a fair price
  • Space-tested models for Roscosmos
  • Functional tool watches

Prices for Fortis Watches

Model/Reference Price (approx.) Feature(s)
B-42 Official Cosmonauts Chronograph, 638.10.11 3,200 USD Black dial, day-date display
Classic Chronograph, 401.26.11 3,000 USD Ceramic bezel, day-date display
B-42 Black Chronograph, 638.28.71 2,600 USD Black PVD-coated titanium case and bracelet
Flieger Chronograph, 597.11.11 2,100 USD Black dial, stainless steel bracelet, day-date display
B42-Official Cosmonauts, 647.10.11 1,800 USD Diving bezel, stainless steel bracelet, day-date display
B-42 Black Mars 500, 647.28.13 l.13 1,800 USD Black PVD-coated titanium case, orange numerals and hands
Marinemaster, 670.10.41 1,300 USD Diving bezel, rubber strap, day-date display

Fortis Official Cosmonauts: For Life in Space

Perhaps the most famous watch in Fortis' entire catalog is the Official Cosmonauts Chronograph. The first model (ref. 630.22.141) debuted in 1994. After surviving a gauntlet of tests at the Yuri Gagarin Cosmonaut Training Center, it would go on to accompany cosmonauts on their missions to the MIR space station and ISS until the year 2003. However, it wasn't just Russian cosmonauts who relied on this robust timepiece. Legendary German astronaut Ulf Merbold also counted on this reliable Swiss timekeeper. Fortis ceased production of this specific reference in 2003.

Fortis outfitted this space chronograph with the beloved automatic Lemania chronograph caliber 5100. This movement has central hour, minute, and chronograph seconds hands. There's also a day-date display at 3, 12-hour counter at 6, small seconds at 9, and 30-minute counter at 12 o'clock. Tritium Arabic numerals complete the black dial.

The stainless steel case measures a moderate 38 mm in diameter. Its stationary bezel features a tachymeter scale for calculating speed and distance. A unique feature of this timepiece is its screw-down pushers, which allow the chronograph to function underwater. Listings for this watch regularly pop up on Chrono24. Depending on the condition and delivery contents, the Official Cosmonauts Chronograph demands anywhere from 1,200 to 2,200 USD.

The Successor: B-42 Official Cosmonauts Chronograph

Fortis introduced the Official Cosmonauts Chronograph's successor, the ref. 638.10.11, in 2003. Instead of the Lemania 5100, this model uses the proven Fortis UW-50 – a modified version of the ETA 7750. You can still find this watch making trips to the ISS to this day. Its "B-42" affix indicates that this is a 42-mm "Beobachtungsuhr" (German for navigation watch). Thanks to its larger size, this chronograph is easier to operate and offers improved dial readability.

Instead of a tachymeter scale, this watch features a countdown bezel with a 60-minute graduation. This enables spacefarers to easily set and keep track of the time on any extravehicular activities (EVAs). Another improvement is the SuperLuminova-filled dot on the chronograph seconds hand, guaranteeing readability even under poor lighting conditions. The final watch is water-resistant to 200 m (20 bar, 656 ft) and comes on a stainless steel bracelet.

You can find mint-condition models on Chrono24 for around 3,100 USD. Pre-owned, the B-42 costs significantly less at about 2,200 USD.

Official Cosmonauts AMADEE-18

Fortis partnered with the Austrian Space Forum (OeWF) to create the Official Cosmonauts AMADEE-18 ref. 638.18.91. The OeWF's main focus is researching potential manned missions to Mars. This includes conducting simulations here on Earth. Fortis is the program's official watch supplier, equipping each astronaut with a timepiece for their earthbound experiments. Crew members first wore the ref. 638.18.91 during the Austrian Space Forum's 2018 Oman expedition.

The AMADEE is very similar to the standard edition. Design differences include its black PVD-coated case and matching black textile strap. It also has a special small seconds dial at 9 o'clock, which is decorated with the red and orange hues of sunrises and sunsets on Mars and Earth. The words "Mars Mission Simulation Sultanate of Oman AMADEE-18" also surround the small seconds. This watch is still extremely rare and has a list price of 3,290 CHF (approx. 3,400 USD).

If you prefer three-hand watches, you may enjoy the Official Cosmonauts Day-Date ref. 647.10.11. Its size and materials are identical to those of the B-42 chronograph; however, its power comes from the caliber UW-31, a movement based on the ETA 2836-2. This model features central hour, minute, and second hands, as well as a day-date display at 3 o'clock. You can purchase a mint-condition watch for about 1,300 USD, while pre-owned pieces demand around 860 USD on Chrono24.


Classic Cosmonauts: Elegant Tool Watches

The Classic Cosmonauts sits at the intersection of elegance and functionality. You can choose from among three options: the Steel A.M., Steel LE, and Steel P.M. They all share a 42-mm stainless steel case, a stainless steel bracelet with polished middle links, a tachymeter bezel, and the ETA 7750-based UW-50 caliber. The movement has central hands for the hours, minutes, and chronograph seconds. It also comes with three subdials at 6, 9, and 12 o'clock, as well as a day-date display at 3.

Each Classic Cosmonauts is also water-resistant to 200 m (20 bar, 656 ft) and features Arabic numerals and screw-down chronograph pushers. The most noticeable differences are the dial and subdial colors: The A.M. has a silver dial and subdials, the P.M. a black dial and subdials, and the LE a white dial and black subdials.

The LE bears the reference number 401.21.72 and is limited to a run of 100 pieces. You can purchase this watch for as little as 3,100 USD new and around 2,500 USD pre-owned. The refs. 401.21.12 (A.M.) and 401.21.11 (P.M.) sell for similar prices. Fortis lists both of the standard editions for 3,690 CHF (approx. 3,800 USD).


Stratoliner Ceramic: Beyond the Stratosphere

The Stratoliner series is home to three models, each pairing the UW-50 caliber with a slightly different design. All three have a 42-mm stainless steel case, stationary ceramic bezel with a tachymeter scale, 100 m (10 bar, 328 ft) of water resistance, and a sapphire crystal case back. Black textile straps hold these timepieces securely on the wrist.

The only difference between these models is their dial colors, which come in white, gray, or black. The color of the SuperLuminova applied to the hands and indices also varies, with beige used on the black and white editions and gray on the gray version. All three models have a red chronograph seconds hand. The Stratoliner ref. 401.26.31 has a black dial and costs roughly 3,100 USD new. Fortis lists the same watch for 3,260 CHF (approx, 3,400 USD). The refs. 401.26.32 (white) and 401.26.37 (gray) demand similar prices.


Aeromaster: Looking Skyward

The Aeromaster series contains a selection of chronographs and three-hand watches. The Aeromaster Stealth Day-Date ref. 655.18.18 belongs to the latter group. Its stainless steel case and textile strap are both black, as is the dial. Beige SuperLuminova fills the indices and hands, offering a nice contrast. The PVD-coated case measures 42 mm in diameter and is water-resistant to 200 m (20 bar, 656 ft).

The automatic caliber UW-31 powers this timepiece. This movement is based on the ETA 2824-2 and features a day-date display at 3 o'clock in addition to its central trio of hands. Fully wound, the UW-31 has a 42-hour power reserve. While this model has a list price of 1,860 CHF (approx. 1,900 USD), you can purchase a mint-condition timepiece on Chrono24 for as little as 1,000 USD.

Other Aeromaster models feature a chronograph function or blue dial. Limited to a run of 300 pieces, the Aeromaster Steel Alarm Chronograph "Paul Gerber" also boasts an alarm function. This timepiece has a list price of 7,450 CHF (approx. 7,700 USD). Listings for this model are few and far between on Chrono24, so keep your eyes peeled. This is also true of the black PVD-coated ref. 657.18.11. Fortis has limited this timepiece's production run to 500 pieces and lists it for 7,850 CHF (approx. 8,100 USD).


Marinemaster: Robust Diving Watches

Like the Aeromaster series, the Marinemaster line is also made up of chronographs and three-hand watches; however, these timepieces are built for life beneath the waves. Each has a 42-mm stainless steel case, which grows to a massive 46 mm with the bezel. Marinemaster watches are all rated to 200 m (20 bar, 656 ft).

The ref. 671.24.12 and 670.24.14 stand out from the crowd with their black and yellow color scheme. There are splashes of yellow everywhere from the bezel's diving scale to the dial's Arabic numerals and the small seconds and subdial hands.

The caliber UW-50 ticks away inside each Marinemaster chronograph. You can purchase a never-worn timepiece on a stainless steel bracelet for about 3,100 USD. This version has an official list price of 3,170 CHF (approx. 3,300 USD). Fortis also offers a Marinemaster chronograph with a gray accents instead of yellow. This version demands roughly 3,600 USD. If you prefer three-hand watches with a day-date function, you should take a closer look at the ref. 670.21.14. The color options, shape, and size all correspond to those of their chronograph sister models. The black and yellow edition costs around 1,700 USD, while the black and gray model changes hands for about 1,500 USD. You will also find three-hand models with blue or red accents.

Marinemaster Silver Chronograph Alarm

In 1997, Fortis teamed up with Swiss watchmaker Paul Gerber to develop the in-house caliber F-2001. What makes this movement truly special is its alarm function. They were able to achieve this by adding a second barrel and a chiming mechanism. The alarm is operated with a pusher at 8 o'clock. This movement appears in the Marinemaster Silver Chronograph Alarm ref. 639.10.41.

Like the other watches in the Marinemaster series, this model features a 42-mm stainless steel case. Beyond the caliber F-2001, the only differences between this watch and other Marinemasters are its color scheme and band. It has orange accents on its dial and is mounted on a matching orange strap. On the other hand, its 60-minute dial is classic black and silver. This timepiece is limited to a run of 300 pieces, making it a fantastic choice for collectors and enthusiasts. While you'd be hard-pressed to find this model on any marketplace, Fortis offers it on their website for 6,840 CHF (approx. 7,000 USD).


Fortis: Refined Swiss Watchmaking Since 1912

Watchmaker Walter Vogt founded Fortis in the Swiss town of Grenchen in 1912. Vogt initially teamed up with John Harwood, the inventor of the first automatic watch movement, and focused on mass producing the Harwood Automatic caliber until 1926. The company was also a trailblazer in the field of watches and water sports, releasing the water-resistant Fortissimo in 1940.

The Marinemaster followed in the early 1950s and remains a cornerstone of the Fortis catalog to this day. If you feel like you've heard that name before, you're right. Fortis and Seiko share the rights to this name after both debuted their first Marinemaster nearly simultaneously. Who actually used the name first is still up for debate.

In the early 1960s, the Space Race was in full swing. Walter's son, Rolf Vogt, seized this opportunity by sending NASA Fortis' first timepiece developed for spaceflight: the Spacematic AR (All Risks).

The first Official Cosmonauts appeared in 1994 and was later replaced by the B-42 Official Cosmonauts Chronograph in 2003 – a model that's still part of every Russian cosmonaut's official equipment. Jupp Philipp took over ownership of Fortis Uhren AG in September 2018 and also serves as CEO.


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