A natural rival to the Must de Cartier models, this De Ville tank model has some advantages over the Cartier. Model reference 511.0404


From the serial number on the movement we can accurately date this watch to being made in 1979.


Must de Cartier tank watches like this one we had have seen a huge revival in recent years, after being dismissed as too small for a long time. This Omega is just a fraction larger in every dimension that the Cartier, and is made from stainless steel rather than gold plated silver – the biggest visual difference between the two watches. The Omega design pre dates the Cartier by a number of years, having first being launched in 1972. apart from never having to worry about the plating wearing out, the Omega has another advantage – they are about half the price of the Cartier watches. This watch is powered by Omega’s calibre 625, which we have just had a new mainspring fitted to for optimum performance. This 17 jewel manual wind movement is easy enough to get parts for, as so many were produced. The silver dial is quite clean, and the glass free from chips and bad scratches. The cabochon stone set into the crown is completely unmarked. The crocodile leather strap is new, and could be swapped for a different colour if preferred. If this watch is to be exported from the UK we will need to fit a calf leather strap to comply with CITES regulations.

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

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.


Width with crown 25.8 mm

Width without crown 24.6 mm

Between lugs 19 mm

Lug to lug length 31.5 mm

Case Thickness 6.2 mm

All sizes are approximate.

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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