When I began to investigate vintage Omega watches I was in a flash snared by their chronographs. As far as I might be concerned, a chronograph is one of the coolest and most usable highlights a watch could have. This was the explanation – or maybe the way that my first Omega with a complication was a type 1040 chronograph. Still right up ’til today I hold those watches precious to me. Thus, as I abided into the brilliant universe of vintage Omegas I ran over a model line that, as far as I might be concerned, was the embodiment of vintage Omega dress watches, and there were many. It was the Omega Cosmic line. Presently, I’m not discussing the last part of the 60’s mid 70’s pad case (Seamaster) Cosmics and Cosmic 2000s. Despite the fact that I had a couple of those as well. I’m alluding to the triple schedule moonphase renditions from the last part of the 1940’s. Vintage Omega moonphase watches like the 2486-2 we’ll discuss today.

Omega Cosmic


Some call it “moon stage”, others express “moonphase”. Since Omega utilizes the last term, I’ll go with that as well. Moonphase is a complication that is genuinely futile these days. Nonetheless, it interfaces us to the absolute starting point of time estimating. The pattern of the Moon is around 29.5 days. This implies that from new moon (when the Moon is scarcely obvious in the sky) to full Moon (when the entire plate is enlightened) back to the new moon again our dim space explorer landing station needs 29 days, 12 hours and 44 minutes (and 2,9 seconds) to finish up. This cycle was perceived millennia prior and it turned into an approach to quantify the progression of time. One could admire the Moon and tell on the off chance that it was the start or the finish of a month (all things considered, this +-29.5-day time frame). After some time a couple of days were added or removed and the (Gregorian) schedule we realize today was born.

1947 – 1956

The Cosmic assortment was presented in 1947 and Omega had it underway until 1956. At the time it was quite possibly the best watches the brand could offer. The Omega Cosmic watches came in two sizes (34-35mm and 37.5mm) in four distinctive case materials. You had steel, gold filled, gold-covered, and strong gold variations (14K and 18K). To the extent my examination goes, Omega delivered six references: five in the last part of the 1940’s and one in the mid 1950’s. The reference 2606, 2471 and 2473 were all little (35mm) watches. The reference 2485 and 2486 were bigger with 37.5mm. In 1951, the last reference of this assortment came to presence as the reference 3944. It was likewise more modest in size yet had an unmistakable square case, rather than round like all the others previously. Every one of them went ahead a calfskin tie with coordinating buckles.

Caliber 381

Some say that the development inside the Omega Cosmic moonphase watches were in-house types. This isn’t correct. Truly, in all honesty, that development has a straight ancestry to the Moonwatch . Allow me to clarify; Omega just utilized one kind of development in their Cosmic watches. Omega considers it the type 381 in their information base. Nonetheless, that development just got its name changed to type 381 around 1948 (some say 1949). Previously it was known as the 27 DL (PC AM). Moreover, the official name of the new type was 381 27 DL PC AM 17 P. DL represents triple date and moonphase, PC alludes to the safeguard and AM is for antimagnetic. 27 denotes the development line where the number comes from the size of the development at 27mm in distance across and 5.25mm in thickness. It has 17 gems and 18.000 Vph.

Omega utilized this development, they didn’t create it. Lémania did. Recollect that at the time Omega, Tissot and Lémania had just framed the SSHI (Société Suisse pour l’Industrie Horlogère – Swiss Association for the Watchmaking Industry) the archetype of the Swatch Group. Lémania conveyed the developments that Omega and Tissot utilized in their watches. Lémania acquired a market while the brands got developments by probably the best producer of the time. It was a mutually advantageous arrangement for everybody. The 27 DL and the 27 CHRO ( that later turned into the 321 ) didn’t just come from a similar development producer yet additionally shared various comparable specialized highlights. Also, at Lémania Albert Piguet was in control for the advancement of the two developments. Accordingly the 381 isn’t just a remarkable development in the Omega Cosmic watches however one with a great story to tell.


The most concerning issue one may come across regarding the Omega Cosmic moonphase is the dial condition. As you can find in the photos mine additionally seen some more promising times however I actually think of it as truly useful for its age. Also that the full scale photographs draw out each little flaw that may be covered up to the unaided eyes. In any case, we can concede to that the dials on numerous models, paying little heed to what reference we are taking a gander at, are a long way from unblemished nowadays. This could be the purpose behind the watch’s age or the way that they were not water safe, so water could advance into the case at first annihilating the development or potentially the dial. A ton of redials are available and one must be all around prepared to have the option to detect the first ones. It’s certainly feasible however but rather takes practice.

The format is straightforward. You have the moonphase gap at 6 o’clock position. That additionally fills in as the sub second dial where the second’s hand runs over the moonphase plate. The day and month windows are under the name and logo at 12 o’clock. They are close to one another. The date is throughout the edge of the dial with a pointer hand showing the right number. Delightful vivacious tones and shapes portray the Omega Cosmic moonphase dials. The files are often raised and painted, the dates have unexpected tones in comparison to the records and again unique in relation to the numerals. The hands could be alpha or leaf, the lists could be roll or spike with smooth or angled surfaces. While most of the dials have no lume in some uncommon cases you can discover one with radium-covered numerals as well as indexes.

Numbers, costs and more

According to certain sources, Omega made generally 50.000 Cosmic moonphase watches in a course of 9 years. Anyway because of various components they are not very successive these days in great, unique condition. You can discover them on the standard online watch stage often with redials. The models that are in acceptable unique condition can bring a serious cost particularly on the off chance that they are strong gold or steel and from the bigger 37mm reference (2485 or 2486). For reasons unknown, a large number of the Omega Cosmic moonphase watches I discovered are coming from South America only. Despite the fact that Omega showcased the brand intensely there, particularly in the 1940’s and 1950’s, their substantial presence is charming, most definitely. The Omega Cosmic region is still genuinely unfamiliar so on the off chance that you have data on these watches kindly send us a mail and I’ll refresh the article accordingly.