Jaeger-LeCoultre
Reverso Tribute Duoface Calendar
Ref. Q3918420
2022–present · 29.9×49.4mm · caliber Jaeger-LeCoultre Cal. 853: in-house manual-wind, 21,600bph, 42h PR; triple calendar with moon phase on the recto and a second time zone with day/night on the verso
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Movement tier: unclassified
Small case: suits slender wrists (under 6.5 in / 16.5 cm)
29.9 mm case. A compact, elegant wear. Particularly at home on narrower wrists where larger cases can overhang.
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Authentication
A reversible case with a calendar on one face and a second time zone on the other means two dials, one movement and a swivel cradle, and most of what can go wrong with a used one is mechanical rather than counterfeit.
Known issues in the market
- The Reverso cradle wears. A case that no longer sits flush when flipped, or that rattles in the cradle, is a service item and a negotiating point rather than a sign the watch is not genuine.
- Triple calendars are set through the case-side correctors, and forcing a corrector while the calendar is mid-change is the single most common way owners damage them. Ask whether it has ever jammed.
- The moon phase and the calendar must agree with each other and with the date; a watch that has been stopped and restarted carelessly often arrives with them out of step, which is a setting problem, not a fault.
| Area | What to check | What is correct | Red flag |
|---|---|---|---|
| case | Swivel action and lock-up in the cradle | The case turns with even resistance and seats positively in both orientations with no lateral play | Gritty or uneven rotation, audible rattle, or a case that will not sit flat once flipped |
| dial | Calendar alignment on the recto | Day, date and month apertures fully framed with no partial characters when the calendar is settled | An indication sitting between two positions outside the changeover window, which suggests a slipped calendar wheel |
| movement | Caliber 853 running and reserve | Manual wind reaching a firm stop, and a 42-hour reserve from full wind | A mainspring that slips continuously with no stop, or a watch that stops well short of 42 hours |
| caseback | Verso dial and day/night indication | Second time zone and day/night disc move together and agree with the recto when set to the same zone | A day/night disc that does not track the verso hands |
Common legitimate replacements
- Straps are consumable on a Reverso and are replaced often; a non-JLC strap does not affect the watch itself.
- Cradle bushings and the swivel spring are ordinary service parts on an older Reverso.
Expert resources: Jaeger-LeCoultre service can confirm the reference and the calendar setting sequence. The other Reverso entries in this catalog cover the case and dial tells common to the family.
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Buying guidance
Source for this entry: europastar.com
Pre-purchase sheet → The numbers to check, what to look at and what to ask, on one printable page.