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Omega Genève Chronostop Geneve Collection Chronograph Ref 146.012 Italian Market 1970

Pre-owned () | Original box | Original papers
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Basic Info

Listing code BOLOB9
Brand Omega
Model Genève
Reference number 146.012
Dealer product code 54801
Movement Manual winding
Case material Steel
Bracelet material Steel
Year of production Unknown
Scope of delivery
Original box, original papers
Location United States of America, Florida, Pompano Beach
Price $1,995
Availability Item is in stock


Movement Manual winding
Number of jewels 17


Case material Steel
Case diameter 41.5 mm
Water resistance 15 ATM
Crystal Plexiglass
Dial Silver


Bracelet material Steel
Bracelet color Steel
Lug width 20 mm


Chronograph, Flyback, Date, Tachymeter


Central seconds


It’s easy to find articles about the “classic” vintage watches, such as the Speedmaster, Submariner, Zenith El Primero, or Heuer Autavia. I thought it would be interesting to explore one of Omega’s least remembered and most misunderstood watches: the Chronostop.

Unlike conventional chronographs that record seconds, minutes, and hours with two or three subdials, the Chronostop was designed to be used for short interval timing — less than one minute — with a central hand for seconds and a single pusher. Omega released the Chronostop in 1966. Originally intended to be part of the Seamaster collection, the Chronostop was transferred to the Geneve collection in 1967 as a lower-priced chronograph watch for younger buyers.
Echoes of the Speedmaster
Despite the low price, the Chronostop was a premium model. The watch’s movement seemed simple, but it was a high-accuracy, high-beat, high-quality engine, essentially a simpler version of the movement that powered the Speedmaster. Omega used two movements for its Chronostop models: the cal.920 (with a date), and the cal.865 (no date). Both manual-wind movements had 17 jewels, run at a rapid 21,600 Bph, and were used only on the Chronostop.
The cal.865 movement was introduced in 1966 and Omega used that model for 124,000 Chronostops. The cal.920 movement appeared in 1968 and was used for 61,000 watches.
The Chronostop was well-regarded within the watch industry: the watch won the 1967 Honor Prize for “Chronographs and Sport Watches” in the competition sponsored by the Swiss Watchmaking Federation to boost creativity. The Chronostop also took the first prize for Industrial Aesthetics at the Utrecht Spring Fair in 1968.
An official Olympic timer
Even though the Chronostop featured only one measurement function, it was selected as the official Omega timer at the Pan-American Games in Winnipeg and the 1968 Olympic Games in Mexico. Available in olive green, red, white, and blue, the Mexico Olympics versions of the watch used the cal.920 movement with the date function and included dial-matching leather straps.
Chronostop variations
Omega made the Chronostop in four different shapes and sizes. I prefer the design of the large, cushion-case Chronostop, especially the models with rotating inner bezels. These bezels feature fixed tachymeters, pulsemeters, telemeters, decimal scales, or even 60-minute diving timers. The Regatta has a 60-0 scale with the last ten minutes marked in blue and red. The Pilot’s scale has numerals graduated in pairs from 12-24, 1-13 and 2-14 onwards to show the time in 24 and 12 hour time zones. With such colorful trim, this watch has acquired the nickname, “the Roulette.” In 1970, Omega relisted a Chronostop model made specifically for the Italian market; this variation had a roundish “UFO” Omega Dynamic case and used the same integrated strap system.
Using the stopwatch
To be honest, the Chronostop is not the most functional chronograph ever made, but at least it is fun to use. The orange second hand for the stopwatch is started by pressing the single pusher, then pressed again and held to freeze the hand and read the seconds. Release the pusher and the hand fly back to 12 o’clock zero.
Despite the limitations of the Chronostop, some people found a good use for the specialized stopwatch: doctors and nurses used the timer to take patients’ pulses, and engineers and technicians working with production lines found the feature to be handy.
The Chronostop will be remembered for its unique place in the Omega line; it continues to appeal to collectors interested in its specialized functions.

Fantastic Vintage Omega Chronostop Italian Market ref. 146.012 with Caliber 920 Manual Wind Movement. Original Integrated bracelet with Original Dial, Hands, Movement, etc…The Plexiglass crystal is an Omega service crystal…OEM Omega but not the original…Great looking & mechanically sound!!

BRAND: Omega

MODEL: Chronostop Date – Geneve – 1970 Italian Market Model Ref 146.012

MOVEMENT: Swiss Manual Wind – Caliber.920

CASE: Stainless Steel

CROWN: Push/Pull

SIZE: 41.5mm

LUGS: 20mm

DIAL: Silver Dial

BEZEL: Non-rotating

CONDITION: Pre owned – Vintage 1970

BOXES/PAPERS: Omega Box Set & Watch – Everything in pictures

WATER RESISTANCE: – 150m – Vintage

STRAP/BRACELET: – Original Omega Stainless Steel Integrated Bracelet with all links.

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