How do I find my Omega reference number?

NAMED ONE OF WATCHPRO MAGAZINE’S “HOT 100” - THE TOP 100 INFLUENCERS OF THE U.S. WATCH INDUSTRY. HOW CAN WE SERVE YOU? We’re new to offering our carefully curated collection on 1stD...

NAMED ONE OF WATCHPRO MAGAZINE’S “HOT 100” - THE TOP 100 INFLUENCERS OF THE U.S. WATCH INDUSTRY. HOW CAN WE SERVE YOU? We’re new to offering our carefully curated collection on 1stD...

NAMED ONE OF WATCHPRO MAGAZINE’S “HOT 100” - THE TOP 100 INFLUENCERS OF THE U.S. WATCH INDUSTRY. HOW CAN WE SERVE YOU? We’re new to offering our carefully curated collection on 1stD...

NAMED ONE OF WATCHPRO MAGAZINE’S “HOT 100” - THE TOP 100 INFLUENCERS OF THE U.S. WATCH INDUSTRY. HOW CAN WE SERVE YOU? We’re new to offering our carefully curated collection on 1stDibs, but we have sold over 10,000 fine watches and exceptionally served thousands of customers with a 5.0 star rating. 1978 OMEGA...

NAMED ONE OF WATCHPRO MAGAZINE’S “HOT 100” - THE TOP 100 INFLUENCERS OF THE U.S. WATCH INDUSTRY. HOW CAN WE SERVE YOU? We’re new to offering our carefully curated collection on 1stDibs, but we have sold over 10,000 fine watches and exceptionally served thousands of customers with a 5.0 star rating. 1952 OMEGA...

NAMED ONE OF WATCHPRO MAGAZINE’S “HOT 100” - THE TOP 100 INFLUENCERS OF THE U.S. WATCH INDUSTRY. HOW CAN WE SERVE YOU? We’re new to offering our carefully curated collection on 1stDibs, but we have sold over 10,000 fine watches and exceptionally served thousands of customers with a 5.0 star rating. 1939 OMEGA - TISSOT Omega Caliber 33.3 Vintage Large Mens Chrongraph - Stainless Steel Rare & Very Collectable - Double Signed Dial - 1 Year Warranty 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. 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...