Today's offering showcases this rare and historically interesting Omega - Tissot chronograph with multicolor and multiscale dial and desirable Omega caliber 33.3movement.

Pleasingly large at 37mm without the crown with olive shaped pushers and a multicolor dial, in many ways this watch is the quintessential early pre-war Omega chronograph. Except what makes this watch particularly rare is the fact that it is double-signed, signed both Omega and Tissot.

Its fabulous multiscale dial has a red outer tachometer ring that measures the speed of objects, done especially for aviation and racing uses and a blue telemeter scale for easily calculating the distance of phenomena that can be both seen and heard, such as munitions blasts and thunderclaps. It also has 1/5 markings for very precise timing for technical and sporting uses.

The Omega 28.9 chronograph was Omega's first true wristwatch chronograph - the first small wrist chronograph movement made by Omega in 1932 after the company had merged with Lemania and Tissot.

Within about a year of its release, Omega switched course and began introducing watches based on the larger Lemania caliber Omega 33.3 (Lemania 15CH/Tissot 5778) in 1933 which became Omega's first well-known chronograph caliber.

This robust and large caliber 33.3 was the predecessor to the famous caliber 321 (Lemania 2310) and the caliber 861, fitted to the Omega "moon watch" still used by NASA astronauts today.

Starting nearly 20 years ago, aided by the popular Omegamania, Omega signed caliber 33.3 chronographs dramatically increased in collectability.

Our Omega-Tissot presents very nicely on the wrist. Its case has one area where the metal has particularly oxided away around the edge of the case back between the lugs that can't be seen while it's being worn and is difficult to see at all with the band installed, and it has light aging under the lugs. Otherwise, the case presents very well. Its original-olive shaped pushers are in excellent condition.

The silver dial, with gold numbers, red outer tachometer scale and blue telemeter scale shows some aging but still presents well. It has a true vintage look. Please inquire if you would like it restored.

One of our Master Watchmakers has disassembled it down to its last screw and cleaned and oiled it and installed a new correct stem. We have timed it on a machine that spins the watch in all directions simulating it being worn on the wrist and it is keeping time within approx. one second per hour.

For the finishing touch, it comes equipped with a black textured leather strap making it ready for immediate enjoyment.

Included with the purchase is a full one-year warranty on the movement and its function and a custom printed Connoisseur of Time Certificate of Authenticity.

Available to pair with it is an uncommon period Tissot box. Please inquire if you're interested.

A couple of very fine dual-signed Omega - Tissot chronographs with this movement have come up for auction in the past five years. Here are links to their lots: Christies; Phillips.

Omega-Tissot:
In 1925, Omega and Tissot began an important association with each other. Shortly thereafter (in 1930 to be exact), the SSIH Holding Company (Societe Suisse pour l'Industrie Horlogere) was founded with Omega and Tissot as its first members. In the 1930's the two company's even sold certain watches branded both Omega and Tissot, like the very rare watch featured.

Note: Amelia Earhart was wearing an Omega caliber 28.9 when she disappeared during her transpacific crossing. And stainless steel examples were used by the commanders and pilots of the Italo Balbo air force who used them on trans-Atlantic crossings.

• Manufacturer: Omega - Tissot
• Country of origin: Switzerland
• Year built: c. 1939
• Case no.: 917,991
• Model: Caliber 33.3 / 5778 Chronograph
• Functions: Hours, Minutes, Chronograph, Subsidiary Seconds
• Designed for: Men
• Case material: Stainess steel
• Case condition: It presents nicely on the wrist. It has one area where the metal has particularly oxided away around the edge of the case back between the lugs that can't be seen while it's being worn and is difficult to see at all with the band installed, and it has light aging under the lugs. Otherwise, the case presents very well. Its original-olive shaped pushers are in excellent condition.
• Dial: Signed Omega Watch Co. - Tissot, silver, gold painted Arabic numerals, red tachometer scale, blue telemeter scale, 1/5 second markings for precision timing, auxiliary dials for the seconds and 30-minute register
• Hands: Blue steel feuilles
• Movement type: Omega / Tissot caliber 33.3 made by Lemania (15CH), gilt plated, manually wound, shock-resistant, column wheel chronograph
• Band: Black textured leather, remborde, excellent condition
• Crystal: Acrylic, excellent condition
• Serviced: One of our Master Watchmakers has disassembled it down to its last screw and cleaned and oiled it and installed a new correct stem.
• Timing: Timed on a state-of-the-art computerized watch system. We have timed it on machine that spins the watch in all directions simulating it being worn on the wrist and it is keeping time within approx. one second per hour. Your watch is important to us, and we will take care of it for its lifetime. We provide the best after sale care in the business with an extremely experienced team of four Master Watchmakers all of whom each have over thirty-five years of experience and a large number of parts. One used to be the watchmaker for an authorized Rolex dealership and was given special training by Rolex at their Beverly Hills Service Center.
• Warranty: 1-year international warranty. Please email concierge@cotwatches.com for details.
• Box/Papers: BOX - Connoisseur of Time watch presentation box; PAPERS - Custom printed Connoisseur of Time Certificate of Authenticity
• Returns: 7 days full refund. 100% satisfaction guarantee

We offer a 100% satisfaction guarantee for all of our watches. If you are in any way unsatisfied with the watch we will fully refund the purchase price anytime within 7 days after the watch has been received. Our goal is to exceed our client's expectations throughout the buying experience.

All watches are packaged carefully and mailed double boxed in specially constructed, reinforced shipping boxes designed for high value items. All watches are sent fully insured with signature required. Most of our domestic shipping is done through FedEx. At times we will also use USPS Express Mail, and we can accommodate most requests for your preferred carrier. International shipments are sent USPS International Express Mail or FedEx.

The purchase price will be the declared value of the merchandise on any required customs forms. The payment of all customs duties, tariffs, and taxes are the responsibility of the buyer.

Also note that water resistance of vintage watches can no longer be guaranteed and is not covered under the watch's warranty. We do not recommend getting a vintage watch wet, even one that was originally designed to be waterproof.

To get an idea of how this watch will look on the wrist, please use the Watch Sizing Guide