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A.I. Reviews v37.5 (refreshed with Grok 4.1 Fast)
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Model Name:
JLC Master Control Triple Calendar 18k White Gold
Watch added to favourite list
Reference:
140.3.87
Price ($)
$
9959
Country:
Switzerland
A.I. Rating
9.1
Crowd Rating:
2204
Watch Description
Jaeger LeCoultre 140.3.87 Master Control Triple Calendar Q140387, 18k white gold on a strap with an 18k white gold deployant buckle, automatic Jaeger LeCoultre caliber 891/477movement, 45 hour power reserve, silver dial with applied Arabic numerals and dart shaped hour markers, day, date, month, contrasting small seconds 6 o'clock, hinged "hunter style" case back, sapphire crystal, diameter: 37mm, thickness: 12mm, water resistant to 5 atm


37
43.1

19
12

50
Gold (18k)
Round
Sapphire
Automatic
891/448
45
Silver
A.I. Watch Review:
# JLC Master Control Triple Calendar 18k White Gold Review by A.I. WatchMetrics
## Watch Summary
The Jaeger-LeCoultre Master Control Triple Calendar in 18k white gold is an elegant dress watch characterized by its refined round case, opaline silvered dial with applied indices and dauphine hands, featuring sub-dials for day and date plus a month sector at the top, powered by the in-house hand-wound Calibre 866/1 offering a 72-hour power reserve, perfectly suited for sophisticated collectors and professionals desiring understated luxury with practical calendar functions.
## Overall Watch Rating: 9.2/10.0
**Rarity Metric (9.7/10.0)** - Its steep secondary market price around $35,000 and limited production run place it in elite scarcity territory, far exceeding mass-produced luxury divers like the Omega Seamaster.
**Material Metric (9.7/10.0)** - The 18k white gold case with exceptional brushing and polishing, paired with double-sided AR sapphire crystal, delivers top-tier material quality comparable to Patek Philippe Calatravas.
**Brand Metric (9.5/10.0)** - Jaeger-LeCoultre's legendary heritage and in-house manufacturing prowess earn it high-end luxury status, on par with A. Lange & Söhne.
**Movement Metric (9.5/10.0)** - The Calibre 866/1 boasts superb finishing, reliable 72-hour performance, and historical significance, rivaling the best from Vacheron Constantin.
**History & Innovation Metric (9.4/10.0)** - Deep historical impact from inventing key watchmaking techniques combined with ongoing in-house innovation secures a top score, similar to Audemars Piguet.
**Dials & Design Metric (9.4/10.0)** - The opaline dial with meticulous sector layout and blued hands exemplifies timeless elegance, benchmarking against the finest IWC Portugiesers.
**Complications Metric (8.6/10.0)** - The triple calendar (day, date, month) provides sophisticated utility without excess, outperforming simpler annual calendars in mid-luxury pieces.
**Versatility Metric (8.4/10.0)** - Suitable for formal occasions and collector display with some daily wear potential thanks to its slim profile, akin to versatile Grand Seiko dress models.
**Functions Metric (7.8/10.0)** - Offers solid timekeeping plus day, date, and month displays, adequate but not exceptional compared to multifunction GMTs at similar prices.
## Total Performance Score (TPS): 2.1
## WM Collector Grade: B+
## Performance Insights: Excels in rarity, materials, and brand prestige with outstanding movement quality, though functions lag slightly; strong value trading below its $55,000 implied price.
## TPS Interpretation: Good Value: The watch punches above its price with superior craftsmanship and complications relative to expectations.
## Watch Data
[https://www.jaeger-lecoultre.com/content/dam/jaeger-lecoultre/master-control/q1682420/q1682420_FHD.jpg] - Front; [https://www.jaeger-lecoultre.com/content/dam/jaeger-lecoultre/master-control/q1682420/q1682420_back.jpg] - Back; [N/A] - Lume; [JLC Master Triple Calendar WG] - JLC Master Triple Calendar WG; [Jaeger-LeCoultre] - Jaeger-LeCoultre; [Master Control Triple Calendar] - Master Control Triple Calendar; [Switzerland] - Switzerland; [https://www.jaeger-lecoultre.com/us-en/watches/master-control/master-control-calendar/q1682420-master-control-triple-calendar] - https://www.jaeger-lecoultre.com/us-en/watches/master-control/master-control-calendar/q1682420-master-control-triple-calendar; [] - ; [Mechanical Handwound] - Mechanical Handwound; [Calibre 866/1] - Calibre 866/1; [2] - 2; [Sophisticated 18k white gold dress watch with triple calendar complications including day-date-month on an opaline silvered dial, powered by in-house manual movement.] - Sophisticated 18k white gold dress watch with triple calendar complications including day-date-month on an opaline silvered dial, powered by in-house manual movement.; [40] - 40; [48.3] - 48.3; [10.72] - 10.72; [20] - 20; [50] - 50; [72] - 72; [28800] - 28800; [None] - None; [32] - 32; [18k White Gold] - 18k White Gold; [Sapphire double-sided anti-reflective] - Sapphire double-sided anti-reflective; [Fixed] - Fixed; [Sapphire exhibition] - Sapphire exhibition; [Signed push-pull] - Signed push-pull; [Brown alligator leather] - Brown alligator leather; [Round] - Round; [Opaline silvered] - Opaline silvered; [Subdial at 6] - Subdial at 6; [Yes] - Yes; [Yes] - Yes; [No] - No; [No] - No; [No] - No; [No] - No; [No] - No; [No] - No; [No] - No; [No] - No; [Yes] - Yes; [No] - No; [No] - No; [No] - No; [No] - No; [No] - No; [No] - No; [No] - No; [No] - No; [No] - No; [Yes] - Yes; [No] - No; [No] - No; [No] - No; [No] - No; [Yes] - Yes; [No] - No; [Yes] - Yes; [No] - No; [No] - No; [No] - No; [No] - No; [No] - No; [No] - No; [6.5] - 6.5; [B+] - B+; [55000] - 55000;
**A.I. WatchMetrics Review v37.4 Grok 4 Fast. December 19, 2025.**


