Warm gold outside, warm gold on the dial, and a tourbillon turning between them. This is the Tourbillon Souverain in 18K 6N gold at 38 mm, with applied 5N gold elements against whitened guilloche silver and blued steel hands. The movement is the calibre 1498, hand wound, a tourbillon with a constant force device, and it puts the hours and minutes in a subdial at 3 o'clock with the power reserve at 10. The case stands 9.9 mm deep. F.P. Journe built this generation from 1999 until 2003, which makes it the movement the manufacture was founded on and the one that established everything that followed. It has not been built in this form for over twenty years, and the calibre was replaced rather than revised.
The dial is asymmetrical and it is worth understanding that the asymmetry is a consequence rather than a style. A tourbillon carriage occupies a fixed and substantial area, and it sits where the movement puts it, which on this calibre is toward the lower left of the face. Everything else has to work around that. The hours and minutes are pushed into their own subdial at 3 o'clock, off the center entirely, with their own minute track and their own set of markers, and the power reserve takes the position at 10 because that is what remains. The result is a face with a large opening in one quadrant, a time display in another, an indication in a third, and a considerable amount of empty guilloche silver holding them apart. Nothing about the arrangement is balanced in the conventional sense and nothing about it needs to be. What it does instead is make the mechanism the subject: the carriage is plainly the largest and busiest thing on the watch, and the time has been relegated to a corner of its own. Very few watchmakers are confident enough to arrange a dial that way, and fewer still make it read as deliberate rather than as compromise. The applied 5N gold elements are what hold it together, since they appear on every one of the three areas and tie them into a single composition.
Forty-two hours is a short reserve and on this watch it is not a shortcoming. Three separate things are drawing on one barrel. The going train takes its share, as it would on any watch. The tourbillon carriage is a continuous load, since rotating the entire escapement once a minute costs energy that a fixed escapement does not require. And the remontoire between them takes a third share, because a constant force device works by being rewound at regular intervals, and every one of those rewinds is paid for out of the mainspring. Set against that, forty-two hours from a hand-wound movement of 32.40 mm and 6.60 mm is a reasonable outcome rather than a compromise. Twenty turns of the crown fills it from empty, and the reserve indication at 10 exists precisely because a watch that runs under two days needs one: an owner who forgets is an owner whose tourbillon has stopped. The specification is 28 jewels across 191 components, running at 21,600 alternations per hour, which is a genuinely low component count for a complication of this order and reflects a movement designed around a single idea rather than several competing ones. Compare that with a perpetual calendar or a chiming watch and the difference in approach is obvious: this is a movement that does one difficult thing extremely well.
Nineteen ninety-nine is the year F.P. Journe began selling watches under his own name, and this is the watch he began with. That fact does most of the work in explaining why the Tourbillon Souverain occupies the position it does. A new independent watchmaker in 1999 had a limited number of ways to be taken seriously, and the one Journe chose was to launch with a tourbillon carrying a constant force device, which is a considerably harder proposition than a tourbillon on its own and was not something the established houses were doing. The watch worked, the marque was taken seriously, and everything the manufacture has built since has been produced by a company that could afford to be ambitious because this watch succeeded first. The calibre 1498 carried that for four years before being replaced by a revised movement with the reserve at 12 and a dead beat seconds added. An example on this calibre is therefore from the founding period rather than from the settled era that followed it, and the distinction is visible on the dial without opening anything at all. That is a rare thing to be able to say about a movement change, and it makes the identification straightforward once you know what to look for.
Buy this one for the movement generation and confirm it before anything else. The power reserve at 10 o'clock is the marker: the later tourbillon moved it to 12 and added a seconds subdial at 6, so a dial without those belongs to the calibre 1498 and to the years between 1999 and 2003. Verify it through the caseback as well, where the plated brass of this generation is unmistakable. Then examine the applied 5N gold elements against the 6N case in daylight, since the two alloys are close and a replaced or refinished dial reveals itself in the mismatch rather than in any obvious damage. Check the guilloche under raking light for the softening at the crest of each line that indicates refinishing. Wind it fully, twenty turns, and let it run down across its reserve to confirm the indication tracks properly. Finally, have the carriage inspected by somebody who works on these, because a constant force tourbillon of this age will have been serviced and the standard of that work varies enormously.