At a glance
Selected reference records
29 documented configurations from 16 model names. These records are a selection, not the full Fortis catalogue.
- Flieger F-39 Midnight Blue · 1 recordReference: F4220011
- Flieger F-39 Original · 2 records
- Flieger F-41 Midnight Blue · 1 recordReference: F4220013
- Flieger F-41 Original · 3 records
- Flieger F-43 Bicompax Original · 2 records
- Flieger F-43 Triple-GMT Original · 1 recordReference: F4260000
- Marinemaster M-40 Rockstone Gray · 2 records
- Marinemaster M-40 Serenity Blue · 2 records
- Marinemaster M-40 Snow White · 2 records
- Marinemaster M-40 Woodpecker Green · 2 records
- Marinemaster M-44 Amber Orange · 2 records
- Stratoliner S-41 Blue Japan · 2 records
- Stratoliner S-41 Cool Gray · 2 records
- Stratoliner S-41 Cosmic Gray · 2 records
- Stratoliner S-41 Reentry Edition · 1 record
- Stratoliner S-41 White Dust · 2 records
Grenchen, 1912
Fortis’s official history says Walter Vogt founded the company in Grenchen, Switzerland in 1912. The brand frames its long record around watches made for a world in motion.
This provides historical context, not proof of the age, originality or specification of an individual Fortis watch. 1
A documented automatic-watch milestone
A Fortis instruction manual says the company entered watch history with the first series-produced automatic wristwatches in 1926. Treat that statement as a manufacturer history claim rather than a shortcut for dating later watches.
Exact calibre, case and period evidence remain necessary for identification. 2
Tool-watch context
Fortis’s history labels its current identity as tool watches and presents chapters including aviation and space-oriented periods. Those themes can guide research, but they do not establish a particular watch’s service use or issue status.
Avoid turning broad collection narratives into unverified provenance claims. 1
Current collections
Fortis currently presents Novonaut, Flieger, Marinemaster, Stratoliner and Vagabond collections. The live site also lists chronograph, date, day-date and GMT types.
This is current retail context and does not constitute a historic catalogue. 34
Research a Fortis watch by reference and era
Record the reference, case-back text, dial layout, movement marking, complications and dimensions. Compare them to a dated Fortis catalogue, manual or product record from the relevant period.
A collection name alone is not sufficient authentication evidence. 234
Keep historical claims bounded
The 1912 foundation and 1926 automatic-watch milestone are company-history claims. They do not establish where every later watch was made, which movement it contains, or whether a particular example is original.
Where documentation is incomplete, retain uncertainty rather than filling gaps with assumptions. 12
Key dates
Ownership and continuity
Fortis’s official material links a 1912 Grenchen foundation and a 1926 automatic-watch claim to its current tool-watch collection range. 1234
Identification and service
For an individual watch, record the complete reference, serial, dial, case, and movement markings and compare them with dated primary documentation.
A brand history cannot authenticate, appraise, or establish the provenance of a particular watch.
Evidence and limits
How the claims are supported
- source stated claim
Fortis says Walter Vogt founded the company in Grenchen, Switzerland in 1912.
- source stated claim
A Fortis instruction manual says Fortis presented the first series-produced automatic wristwatches in 1926.
- source stated claim
Fortis describes its history as tool watches since 1912 and includes aviation- and space-oriented historical chapters.
- verified observation
Fortis currently presents Novonaut, Flieger, Marinemaster, Stratoliner and Vagabond collections, with chronograph, date, day-date and GMT types listed on its watch page.
Known limits
- This guide does not authenticate or value an individual watch.
- Brand history and collection themes do not establish the provenance, movement or specification of every Fortis watch.
Direct sources
- The Fortis HistoryFortis Watches AG · official history · accessed September 12, 2026
Locator: Official historical timeline and founding account. First-party source; its statements remain attributed.
- Fortis Instruction ManualFortis Watches AG · official product document · accessed September 12, 2026
Locator: Manufacturer history statement. First-party source; its statements remain attributed.
- Collections | FortisFortis Watches AG · official collection page · accessed September 12, 2026
Locator: Current collection navigation. First-party source; its statements remain attributed.
- All Watches | FortisFortis Watches AG · official collection page · accessed September 12, 2026
Locator: Current watch types and collections. First-party source; its statements remain attributed.
Corrections
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