Omega Constellation Calendar Cal.504 18ct 1959


100% Genuine & All Original

Fully Inspected, Serviced & Guaranteed

A Carefully Owned & Lightly Used Example

Heavy, Birmingham UK 18ct Hallmarked 35mm Case

Press-Fit Case-Back with Crisp, Hardly Worn Constellation Motif

Previously Restored Silver-White Dial with ‘Dauphine’ Hands in Superb Condition

Fully Serviced, Certified Chronometer 24 Jewel, Cal.504 Automatic Date Movement

All in Absolutely Top Grade & Simply Stunning Condition Throughout

New Brown Alligator Strap with Gold-Plated Omega Buckle

High Quality Hardwood Presentation Box Included

VGWL 12 Months’ Written Warranty Included*

VGWL Lifetime Authenticity Guarantee

Free Worldwide FedEx Delivery

Free UK Special Delivery

VGW Reference: Om1226
Price £3,950


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Omega Watches

Since the company was founded in 1848, Omega has pioneered a huge range of innovations. Britain’s Royal Flying Corps chose Omega watches in 1917 as official timekeepers for its pilots and again in 1940, RAF Pilots watches were supplied by Omega. The 1940s also saw the first tourbillon wristwatch and the first of the famous Seamaster watches, whilst the ’50s and ’60s introduced the legendary Constellation, Speedmaster, Seamaster 300 and Railmaster. Over these years, everyone from John F. Kennedy to Elvis wore Omega watches on official duties. What’s more, in 1962, astronaut Wally Schirra took his Omega Speedmaster into space on NASA’s Mercury Sigma 7 mission and in 1969 two Speedmasters landed on the moon, worn by Neil Armstrong and Buzz Aldrin.


The Omega Constellation Calendar is an iconic timepiece, having remained in continuous production since 1952 and one which has always represented Omega’s most luxurious precision chronometer timepiece. When launched, and throughout the 1950s and ’60s, the Constellation was more prestigious and more expensive than the equivalent Rolex Oyster Perpetual and also contained a finer movement.

The watch carries the Omega Calibre 504 Chronometer Automatic movement which is very highly regarded for its accuracy and reliability. The 18ct yellow gold case measures 35mm and is in wonderful condition, having being previously restored to a very high standard.

The Dial

The beautiful silver-white dial is simply superb. This is a classic Omega Constellation dial design which has become highly sought after in recent years, especially in as good condition as this one is, and it isn’t difficult to see why. Furnished with gold ‘baton’ hour indices inlaid with black onyx, and the original previously restored ‘Dauphine’ hands, it really catches the light beautifully and looks far better in real life than in the photographs. The style is classic 1950s Omega and is perfect for both evening wear and regular everyday use.

The dial carries the applied gold Omega brand and signature, with ‘Automatic Chronometer Officially Certified’ below 12, ‘Constellation’ and ‘Calendar’ above 6 and  ‘Swiss Made’ at the very bottom.

This is the original dial which has been restored previously to a very high standard and is therefore in absolutely superb condition.

The Movement

The original Omega Calibre 504, 24 Jewel Automatic Chronometer movement is a true classic. It was the first Omega Constellation calibre to carry the date function and it is quite rare as it was made in quite small numbers, by far the majority of which are found in the steel, or gold and steel Omega Constellations. A Calibre 504 found in an 18ct Constellation Deluxe is very rare indeed.

The movement has just been fully overhauled and serviced by our watchmaker. This involves fully dismantling the movement to all its components, ultrasonic cleaning of all the parts,  inspection of all the critical surfaces under high magnification and replacement as required with genuine new original parts. Next, careful reassembly and oiling, using all the correct lubricants to manufacturer’s specification before final testing and calibration. This watch is now running, winding and setting perfectly, having been calibrated and timed at -16 seconds per day! Please note, this timing is excellent for any watch of this age. The watch movement also has an excellent 46-hr power reserve. We are therefore more than happy to provide our 12 month warranty on this watch*.

The movement is signed ‘Omega Watch Co.’, ‘Swiss’, ‘Adjusted to five positions and temperatures’ and ‘24 Jewels’ and carries the calibre number 504, along with the serial number 16887958 which dates the manufacture of this watch to 1959.

*Please note – our 12 months’ warranty is only included if the list price is paid.

The Watch Case

The 35mm Omega case is of exceedingly high quality with a beautifully designed profile and lugs. The case is very sturdy and one of the heaviest Omega Constellation cases produced.

All the lines and edges are well defined, indicating the watch has been very well cared for. The case-back Constellation Observatory motif is also very distinct, again indicating this watch has seen little use. The case-back, bezel and case body are all in beautiful condition with no scratches, dings or other damage visible to the naked eye. The watch has been lightly used and very carefully looked after, which has meant that after careful inspection, the case has simply required a professional clean and gentle hand-polish to bring back the almost new look of the watch.

As can be seen, the inside of the case-back is signed ‘Dennison Made in England’ and ‘Omega Watch Co.’ with Birmingham 18ct hallmarks and the case number 948032.

As ever our standard advice applies: Vintage watches should be kept clean and dry at all times.

The Strap and Buckle

The watch has been fitted with a new, high-quality brown alligator strap and gold-plated Omega buckle. However, if a different colour or style of strap is preferred, please let us know and we will do our best to oblige, free of charge. We carry tan, conker, dark brown burgundy and black straps in stock, in plain, padded leather, alligator, or lizard skin.

Box and Papers

Although there are no original papers with this watch, the reference numbers, markings, signatures and hallmarks are all correct, dating this watch to 1959.

Detailed particulars will be included with the receipt, along with our 12 months’ warranty*. A separate insurance valuation for the replacement value will also be provided at the time of sale with our ‘Lifetime Authenticity Guarantee’ which states: “If this watch proves to be anything less than totally authentic, or not as described, Vintage Gold Watches of London will offer you a full refund at any time”.

The watch comes complete with a high-quality hardwood presentation box, as shown in the photographs.

In Conclusion

This is a truly beautiful example of a top of the range, 1950s 18ct Omega Constellation Calendar in wonderful condition. If you are looking for a great example of a top marque Omega with one of Omega’s best ever automatic movements then this watch ticks all the boxes. The movement is of a very high grade and an equal to watches much more expensive than this. Indeed when new, this watch would have cost more than the equivalent gold Rolex Oyster Perpetual. Omega Constellation watches are highly collectable and the desirability of this watch means its value will always remain strong.

In addition to being perfectly practical for everyday use, this watch will make an excellent investment and heirloom piece, as well as be something wonderful to use, wear, treasure and enjoy! Even though vintage gold Omega watch prices continue to climb, we still feel sure that top class examples such as this are underpriced. This because, as time passes and the world market for vintage gold Omega watches continues to grow, limited supply means prices will inevitably climb ever higher.

A word about our prices – We always try our hardest to acquire the very highest quality watches we can find, before restoring these to the highest possible standards. We then offer these at the fairest prices we can, taking into account our pre and post sales care and service. This approach inevitably means we will never be the cheapest, but nor will we be the most expensive. Indeed there are a number of well-known stores in West London which are very successful, charging between two and three times the price you see here. We therefore consider our prices to be fair, given the quality of watches we have to offer.

We are happy to accept PayPal as this is the quickest method of payment. However, if you would like to pay by bank transfer, we will be pleased to pass on a 3% transaction saving to you. Similarly, if you wish to pay by International SWIFT or International Bank Wire Transfer, we will provide you with our BIC / Swift number and our IBAN number.

Please note, we welcome part exchanges and if you have a watch or small collection for sale, please contact us as we will be happy to discuss this.

We will be happy to Service your watch, Repair your watch or Restore your watch. All at ‘sensible’ prices. Please see here.

If you have any questions, please call our landline 020 7727 7095 or mobile 07515 949 250 or if calling from overseas our landline number is +44 207 727 7095 or mobile +44 7515 949 250.

We are here, ready, available and awaiting your call! We will be happy to answer any questions and offer advice about this or any of our watches listed for sale. If you would like some general advice regarding any aspect of vintage watches, including buying, selling, or collecting vintage watches, we will also be happy to hear from you.

Finally, please enjoy some time spent viewing our other fine vintage gold watches!

Thank you.