The replica Rendez-Vous Moonphase sold under the "My Star" name is worth buying only when the moon phase is real. Look for a disc that completes one cycle every 29.5 days, a bezel with stones set into metal rather than glued on, and a case between roughly 34 and 38.5 mm that matches the reference you have in mind. Copies that show a 24-hour day and night window in place of a moon phase, or that print the star field flat on the dial, sit in a lower tier and read as wrong the moment anyone looks closely. The criteria below are the ones that separate a convincing piece from a costume piece, and they matter more than any spec list a seller posts.
What "My Star" actually signals in these listings
The Rendez-Vous line is Jaeger-LeCoultre's collection aimed at women, and the moon-phase references in it place a moon and stars against a dark or mother-of-pearl sky. Sellers borrow the "My Star" phrasing to describe that dial motif. It is marketing language, not an official model name, so treat it as a hint about the dial and nothing more. What decides the quality of a specific watch is whether the listing shows a true moon aperture at six o'clock, what the case diameter is, and which movement the seller admits to using.
The moon phase itself: real disc or day and night window
A true moon-phase complication advances a disc through a synodic cycle of about 29.53 days, which a standard 59-tooth moon wheel produces by stepping one tooth per day. Many budget copies skip that mechanism and fit a 24-hour day and night disc with a moon on one half and a sun on the other. On those, the moon returns to the same position every single day, and the disc creeps at a constant rate instead of stepping once daily.
- Signs of a real moon phase: two moons on opposite sides of a rotating disc, a cycle of about 29.5 days, a corrector or pusher to advance or set the display.
- Red flags: sun and moon icons in the same aperture, a disc that turns once in 24 hours, a star field printed flat with no depth, no corrector on the case band, an aperture shape that does not match the reference.
Pros of holding out for a real moon phase
- The four-week cycle is the point of the watch, so the complication behaves the way a buyer expects.
- The disc under glass shows layered colors and a glossy moon rather than a flat sticker effect.
- Resale within the replica market is easier because the feature is verifiable.
Cons
- Costs more than a quartz copy with a painted moon window.
- Needs correct setting when the watch has been idle for weeks.
- Service and repair options are limited, so a broken moon module is often a write-off.
Bezel stones and setting quality
On the genuine pieces the stones sit in a metal setting with even spacing and consistent orientation. Replica versions split into two camps. The better ones use a proper channel or grain setting with stones seated below the metal edge. The cheaper ones glue cubic zirconia onto a flat surface, which shows gaps, uneven height and a milky look at an angle. Check a close photo of the bezel at 45 degrees. If you can see glue, gaps wider than the stones themselves, or a stone tilted out of line, the rest of the watch is usually built to the same standard.
Case, crown and caseback finishing
Look at the lug profile and the way the case band meets the bezel. A good copy keeps a crisp edge between brushed and polished surfaces instead of blending them into one soft curve. The crown should carry the correct logo on a raised relief, turn with light resistance, and sit flush against the case. On the back, engraving should be cut into the metal rather than printed, with readable text and a serial that matches the paperwork the seller provides. Sapphire crystals should show a slight bevel at the edge, not a rounded plastic lip.
Movement tiers in the replica market
- Quartz tier. Thin case, ticking seconds hand, no moon phase, often the cheapest option and the least convincing on the wrist.
- Automatic tier with a bolt-on moon module. Sweeping seconds, correct overall thickness, a moon display that works but can be fragile and noisy when the rotor turns.
- Decorated automatic tier. Engraved and striped rotor, blued screws, a moon module with a metal disc, and case proportions that track the reference within a millimeter or two.
Dial printing, hands and the star motif
Printing should be sharp under magnification, with correct spacing and no bleeding at the edges. Watch the language: a moon-phase Rendez-Vous with an automatic movement carries the automatic wording on the dial, and a copy that mixes wording from two references is a giveaway. The star motif should look layered, either as applied markers or as a lacquered sky with depth behind the moon. Hands on this line are slim and tapered, so check that the tip reaches the track cleanly and that the finish is evenly blued or rhodium plated rather than patchy.
Size, strap and clasp fit
Rendez-Vous cases run small, so a copy that measures 40 mm across will sit on the wrist like a different watch entirely. Measure your wrist and compare against the reference diameter before ordering. The strap should be grained leather with even stitching and a taper that matches the lug width, or a steel bracelet with correct link proportions. Check the clasp engraving and whether it is a pin buckle or a deployant, because sellers often substitute whichever is cheaper that month.
Which version fits which buyer
If the watch is a display piece for occasional wear and you want the moon phase to move, choose the automatic tier with a real 29.5-day disc and a properly set bezel, and accept that it costs more. If you want a daily beater that survives knocks and rain without worry, a quartz copy with a well finished case and a clean dial is the practical pick, as long as you accept the static moon window. If you are buying to compare against a genuine piece or to photograph for a project, go for the decorated automatic and ask the seller for macro shots of the bezel, the crown logo and the caseback before you pay.