Fortis - Air observer Up-Down Chronograph - Ref. 187 - Valjoux 77 - Men - 1900-1949
06
days
10
hours
38
minutes
26
seconds
Starting bid
€ 1
Reserve price not met
Expert
Selected by Alfonso Minondo
Over six years of professional experience in watches with extensive collector network.
Estimate € 900 - € 1,000
No bids placed
Catawiki Buyer Protection
Your payment’s safe with us until you receive your object.View details
Trustpilot 4.4 | 134906 reviews
Rated Excellent on Trustpilot.
Fortis Air Observer Up-Down Chronograph Ref. 187 with manual Valjoux 77 movement, a 35 mm stainless steel case, leather strap, and a signed dial, caseback and movement, dating from circa 1948 and in excellent condition with very light wear, shipped insured.
AI-assisted summary
Description from the seller
The vintage Fortis Chronograph Ref. 187 “Up/Down” is a distinctive and highly collectible timepiece, prized for its utilitarian design and mechanical character. Housed in a robust stainless steel case, it features a clean, legible dial layout highlighted by its unique “up/down” chronograph registers at the 12 and 6 o’clock positions, adding both visual interest and practical functionality. It’s postwar estimated around 1948.
Powered by the reliable Valjoux 77 manual-wind movement, the watch offers precise chronograph performance with a tactile, engaging winding experience. Its classic proportions, rectangular pushers, and period-correct detailing make it a compelling example of mid-century tool watch design, appealing to collectors who value both historical significance and mechanical authenticity.
The Fortis Chronograph Ref 187 features a 35mm stainless steel case with rectangular chronograph pushers, a solid case back, and an acrylic crystal. The dial features sub-registers at the 12- and 6-o’clock positions, an outer railroad-style minutes track, Arabic numerals, and copper-colored hour and minute hands. The Ref 187 is powered by a manual-wind Valjoux 77 movement.
The watch is in excellent condition and all functions timekeeping and chrono work flawlessly.
This watch has a signed dial, caseback and movement!
The watch is matched with a natural leather NATO strap but of course the 18mm lugs can facilitate multiple strap options.
The watch will be sent registered and insured.
The vintage Fortis Chronograph Ref. 187 “Up/Down” is a distinctive and highly collectible timepiece, prized for its utilitarian design and mechanical character. Housed in a robust stainless steel case, it features a clean, legible dial layout highlighted by its unique “up/down” chronograph registers at the 12 and 6 o’clock positions, adding both visual interest and practical functionality. It’s postwar estimated around 1948.
Powered by the reliable Valjoux 77 manual-wind movement, the watch offers precise chronograph performance with a tactile, engaging winding experience. Its classic proportions, rectangular pushers, and period-correct detailing make it a compelling example of mid-century tool watch design, appealing to collectors who value both historical significance and mechanical authenticity.
The Fortis Chronograph Ref 187 features a 35mm stainless steel case with rectangular chronograph pushers, a solid case back, and an acrylic crystal. The dial features sub-registers at the 12- and 6-o’clock positions, an outer railroad-style minutes track, Arabic numerals, and copper-colored hour and minute hands. The Ref 187 is powered by a manual-wind Valjoux 77 movement.
The watch is in excellent condition and all functions timekeeping and chrono work flawlessly.
This watch has a signed dial, caseback and movement!
The watch is matched with a natural leather NATO strap but of course the 18mm lugs can facilitate multiple strap options.
The watch will be sent registered and insured.
Details
Brand
Fortis
Gender
Men
Model
Air observer Up-Down Chronograph
Reference number
Ref. 187 - Valjoux 77
Band material
Leather
Shipped insured
Yes
Band length
Regular (180–200 mm)
Period
1900-1949
Repainted dial
No
Movement
Manual winding
Case material
Stainless steel
Original box included
No
Original papers included
No
Case diameter
35 mm
Original warranty included
No
Condition
Very good - minor signs of wear
Sold by
