1 / 4 Replica collection · Aqua Terra · Chronometer with date
Model reference: 2503.80.00
A 39.2 mm blue-dial Seamaster Aqua Terra with a plain polished rim, a date at three, and an earlier-generation dial print naming the escapement and the chronometer certification.
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About this watch
The 2503.80.00 is a 39.2 mm Seamaster Aqua Terra with a blue dial, a date at three o'clock and a plain polished rim instead of a rotating bezel. Omega carries it on its own page as the Seamaster Aqua Terra Chronometer and states that the reference is no longer available, which places it in the earlier generation of the line.
The dial print is the detail to start with. It names the escapement and the chronometer certification in three short lines rather than using the later Master Chronometer wording, and it is the marker visible from the front that separates this generation of Aqua Terra from the 41 mm watches that followed it.
The four frames below are shown as they arrived: the watch on a black textured strap, photographed front on, at an angle, in a dial close-up and at the crown and case flank. Omega's catalogue pairs this reference with a steel bracelet, and that is stated here as published reference data.
Omega's own page for the 2503.80.00 lists a 39.2 mm case in steel, a domed scratch-resistant sapphire crystal and about 137 g of total weight, and it carries the model as the Seamaster Aqua Terra Chronometer. The same page states that the reference is no longer available.
In the four frames the case reads as a wide, low rim around a dial that takes up most of the front, with the crown standing clear of the flank at three o'clock. It is worth keeping two things apart here: the 39.2 mm figure, the crystal and the 137 g weight are published reference data from Omega's page, and none of them can be measured off a photograph, so the frames are not evidence for size or weight in either direction.
It sits between the two, and every detail that puts it there is visible on the front. The case has a plain sloping rim rather than a rotating bezel, the depth rating is printed on the dial as a line of text instead of a scale, and the hour markers are applied wedges with luminous fill rather than dots sitting on the surface.
That mix is what the Aqua Terra was drawn around: nothing about the front looks like equipment next to a Seamaster diver, yet every marker still carries luminous fill and the dial still states its rating in words where a diver would put a scale. If you want the rotating ring and the bezel numbers, this is the wrong reference; if you want the case shape that goes with a cuff, it is the right one.
Because this reference belongs to the earlier Aqua Terra generation, and the dial print is the visible marker of it. The three short lines under the hands name the escapement and the chronometer certification, without the later Master Chronometer wording.
That distinction matters when a 39.2 mm blue-dial Aqua Terra is standing next to a later 41 mm watch in the same colour. Across a table the two look alike; the print low on the dial is what separates them, and it also tells you which generation of the calibre 2500 family the watch is built around.
The four frames show the watch on a black textured strap, while Omega's catalogue pairs the reference with a steel bracelet and a sliding clasp. Both statements are accurate and they are about different things: one is what the frames show, and the other is published reference data.
So the frames are the only evidence on this page for the strap in the frames, and the bracelet is what the reference was catalogued with. Which of the two you would receive is a question for the inquiry form rather than for this page, and it is worth settling before anything else about the watch.
The dial is a mid blue with a pale brushed finish that lightens toward the centre and deepens at the edge, and it is the same surface in all four frames under different light. Applied wedge-shaped markers stand around the dial, each one filled and catching light along its top edge.
The brand name sits above the centre with the line name in script beneath it, the three printed lines sit low under the hands, and the date aperture at three o'clock shows two digits. A thin printed track of small marks runs around the outside of the markers, and the bezel above it is a plain polished ring with nothing printed on it.
Omega's page lists 15 bar, or 150 m, for the reference, and the dial in the frames carries the same figure printed as 150m/500ft. Both of those are published statements about the reference design rather than a test result for any one watch.
The state of the seals on a watch that has been worn for some years is not something anyone can read off a photograph, so if the rating matters to you it is better treated as something to confirm than to assume. The caseback, the gaskets and the crown threads all sit outside what the four frames can show.
Specification
| Detail | Description |
|---|---|
| Model reference | 2503.80.00 |
| Model size | 39.2 mm case diameter, as listed by Omega for this reference |
| Dial | Blue, brushed finish, with a printed track of small marks around the outer edge |
| Dial print | Brand name over the Seamaster script above the centre; three lines under the hands naming the escapement, the chronometer certification and the depth rating; SWISS MADE along the lower edge |
| Bezel design | Plain polished sloping rim, fixed, with no insert and no scale on it |
| Bezel graduations | None. The depth rating sits on the dial as printed text rather than on a bezel scale. |
| Hour-marker layout | Applied wedge markers spaced around the whole dial, with small printed marks between neighbouring markers |
| Hour markers | Applied silver-toned wedges with luminous fill along the tip, as the frames show them |
| Hand arrangement | Arrow-tipped hour and minute hands with luminous fill, plus a slim seconds hand, as seen in the frames |
| Date display | Aperture at three o'clock showing two digits; the frames show it reading 28 |
| Subdial layout | None. The dial carries no subdials, only the date window at three. |
| Colour combination | Blue dial with silver-toned hands and markers, a blue-centred crown in the last frame, and a black textured strap |
| Strap shown | Black textured strap with light stitching at the lugs, as shown in the four frames |
| Strap (reference supply) | Omega's catalogue pairs this reference with a steel bracelet and a sliding clasp; published reference data, not what the frames show |
| Movement (reference design) | Self-winding calibre 2500 with 48 hours of power reserve, as listed by Omega; the unit fitted in an individual watch is a question for the inquiry form |
| Case and crystal (reference design) | Steel case, domed scratch-resistant sapphire crystal, 15 bar (150 m), about 137 g of total weight on Omega's page |
| Catalogue status (published reference data) | Omega carries the model as the Seamaster Aqua Terra Chronometer and states that the reference is no longer available |
Questions
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