Top pick for most buyers: a 34 mm stainless steel first copy of the Jaeger-LeCoultre Rendez-Vous Moon with a mother-of-pearl dial, a moon disc that advances on a true 29.5-day cycle, and a star-tipped hand that can be set on its own. The five points that separate a wearable first copy from a throwaway are case proportions, moon disc artwork, dial and hand finish, movement and setting behavior, and bezel and strap hardware.
What the genuine Rendez-Vous Moon gets right
The Rendez-Vous is Jaeger-LeCoultre's women's collection, and the Moon models place a moon phase aperture at 6 o'clock on the dial, add a star-tipped hand the wearer sets to a chosen rendez-vous time, and use a case that lands at 34 mm or 36 mm depending on the reference. The design leans on finishing: guilloche or mother-of-pearl dials, polished and faceted hands, and a moon disc painted with real depth instead of flat ink. A first copy worth owning has to respect the proportions first and the decoration second.
Criterion 1: Case size, profile, and bezel
A genuine Rendez-Vous Moon reads thin and slightly domed, with a narrow bezel and lugs that curve toward the wrist. Copies fail here first. A 36 mm case that measures closer to 39 mm across the bezel, or a case that is 12 mm thick when it should sit near 9 mm, gives the watch away before anyone reads the dial. On diamond-set versions, check that stones sit flush in a gold-colored setting rather than standing proud in a plated channel.
Pros of prioritizing case work:
- Wears correctly and slides under a shirt cuff.
- Takes standard strap sizes, so you can swap leather yourself.
- Photographs without the bulky look that marks a cheap copy.
Cons:
- Adds cost at every tier.
- Impossible to confirm from one front-on image. Ask for profile and side shots with a ruler in frame.
Best for: daily wearers who care about proportion more than extra sparkle.
Criterion 2: The moon disc and the moon phase function
This is the section most copies get wrong. A true moon phase advances roughly once every 24 hours across a 29.5-day cycle, so the moon drifts through the aperture slowly. Many budget copies hide a 24-hour day and night wheel behind the aperture, which flips the display twice a day, or glue a printed sticker onto the wheel. Look for a painted disc with two moons, a star field with visible depth, a clean aperture edge, and a corrector or crown position that moves the disc in small steps when you turn it.
Pros:
- A working moon phase is the most convincing single detail on this model.
- You can set the phase to the current lunar date and it stays plausible for weeks.
Cons:
- Raises the cost in every tier.
- Disc artwork varies between batches of the same build, so two examples can look different.
Best for: buyers who will show the watch to people who know the reference.
Criterion 3: Dial, hands, and the star-tipped hand
The star-tipped hand is a signature of the collection, and it should be set independently of the hour and minute hands. On a weak copy the star hand is fixed or just decorative. Check the polishing on the bevels, the printing on the numerals, and whether the moon aperture sits centered under 12 o'clock. Mother-of-pearl dials should show genuine iridescence that shifts with the light, not a printed swirl pattern.
Pros:
- Dial and hand quality is visible from arm's length, where most judgments happen.
- Correct hand shapes make the watch read as a dress piece rather than a novelty.
Cons:
- Hard to judge from compressed photos, since glare hides finishing flaws.
- Replacement dials are rarely available, so a bad dial is permanent.
Best for: buyers who want the watch to hold up in person, not just in listing photos.
Criterion 4: Movement, winding, and setting
Ask how the watch winds, how the moon phase is corrected, and whether the date jumps cleanly at midnight. An automatic movement with a smooth sweep and a quiet rotor is the baseline. A quartz movement is easy to spot once the seconds hand ticks, and it also means the moon disc is driven by a simple wheel rather than a lunar module. Listen for rotor rattle, feel for crown grit, and check that the crown pulls to distinct positions.
Pros:
- A clean automatic movement supports everyday wear and keeps the case thin.
- Proper setting positions make the moon phase usable instead of ornamental.
Cons:
- Servicing is difficult, and many watchmakers will decline to open a copy.
- Movement quality is the hardest trait to verify before purchase.
Best for: buyers who plan to wear the watch often and want it to keep time.
Build tiers you will see
- Entry builds: quartz or basic automatic, printed moon disc or a day and night wheel, plated bezel, stiff strap.
- Mid builds: automatic movement, painted moon disc, sapphire crystal, better leather, average case finishing.
- High builds: thin automatic case in the correct diameter, real lunar disc, faceted hands, sharp dial printing, solid hardware.
Red flags that should end the conversation
- A moon aperture that changes twice a day instead of once.
- Reluctance to send a video of the moon phase being corrected.
- Diamond settings that snag cloth or sit at uneven heights.
- Case thickness that adds two or three millimeters over the reference.
- A star hand that cannot be moved independently.
Which build fits you
If you want one watch for daily wear and care about how it sits on the wrist, take the 34 mm steel build with a working lunar disc and a plain or diamond-set bezel, and spend your budget on the case and movement. If you collect and want a display piece for evenings, the 36 mm mother-of-pearl version with a diamond bezel gives more presence, and the moon disc is the part to inspect hardest. If the budget is tight, buy a mid build with a correct 29.5-day disc and skip the diamond bezel, because stone setting is where low-cost copies look worst.