The first, and only, wrist watch to be graded as a Marine Chronometer, this Omega Constellation remains incredibly accurate.  Model reference 398.0836.

HOW DO WE DATE THIS WATCH?

From the serial number on the case we can accurately date this watch to being made in 1973.

CONDITION

We have to thank the author of this website for their research into this model.  It is both in depth and, cross referencing it, very accurate.  Which suits this watch – still considered the most accurate non thermo compensated quartz movement made.  The button below the crown is to set the seconds only – it really is that accurate that you can independently set the seconds hand!  You can also adjust the hour hand independently to allow for both quick and accurate changes across the time zones and to adjust the calendar at 6.  All is working well, and we will install a brand new battery to this calibre 1511 before sending the watch out to the new owner.  The dial is surrounded by a 14k gold bezel, befitting a watch that cost 60% more than a Speedmaster Professional when new.  The hands are the correct ones, with a slight taper.  The case and bracelet look to have been polished, and some light marks remain.  The bracelet is the original, solid version stamped 1209/202 on the clasp, as it should be.  The bracelet is quite long and our sister website, SpareLinks.com, may have extra links if required.  The bracelet has been cleaned in our ultrasonic bath.  The watch is signed on the dial, case, movement, crown and clasp.

This watch will be supplied with our branded presentation box and our Certificate of Authenticity.

This watch has been checked against the Watch Register and has not been reported as lost, stolen or implicated in fraud, and a copy of that certificate will also be included.

Please see the HD video for more detail.  All photos and videos are part of the description and are of the actual watch unless mentioned.  We do not photoshop any pictures, and the images are copyright of birthyearwatches.com and should not be used without permission.

​SIZE

Width with crown  34.8 mm

Width without crown  32.5 mm

Between lugs  18 mm

Lug to lug length  48.7 mm

Case Thickness  12.6 mm

Bracelet will fit a maximum wrist size of 195 mm.  The bracelet can be sized for you if you give us your wrist size when placing the order.

All sizes are approximate.  The watch is photographed on a wrist of 190mm/7.5 inches.

Included with this watch is a 3 month guarantee and free delivery to UK addresses.  If you live outside the UK we can still deliver to most countries.  Please see our Worldwide Shipping information, or Contact Us.   Payment can be made by most credit or debit cards, bank transfer or PayPal.

From 1st September 2021 we will be planting a tree for every watch we sell, working with the International Tree Foundation (Est 1922) to make this business positive on carbon.  By buying anything pre owned you are effectively reusing what already exists, but this takes it further and makes us feel good.

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