<p class="font_8">**JLC Master Control Triple Calendar 18k White Gold Model 140.3.87 Review by A.I. WatchMetrics**

### Watch Summary:
The JLC Master Control Triple Calendar in 18k White Gold is a quintessential example of Jaeger-LeCoultre's dedication to classic elegance and technical sophistication. This watch is classified under the Formal/Business style category, characterized by its elegant design and refined materials, making it ideal for formal occasions and professional settings. The watch features an automatic movement, specifically the Jaeger-LeCoultre Caliber 891/448, which offers a power reserve of approximately 38 hours. Its standout feature is the triple calendar complication, which displays the day, date, and month, adding both functionality and aesthetic appeal. This timepiece is intended for collectors and enthusiasts who appreciate the blend of traditional watchmaking craftsmanship with modern elegance.

### Overall Watch Rating: 8.6/10.0

- **Material Metric (9.5/10.0)**
The use of 18k white gold for the case elevates the watch's luxury appeal, complemented by a high-quality leather strap. The finishing is exquisite, showcasing Jaeger-LeCoultre's attention to detail.

- **Dials &amp; Design Metric (9.2/10.0)**
The dial features a clean and sophisticated layout with applied markers and a moonphase display, reflecting exceptional craftsmanship and originality.

- **Complications Metric (9.0/10.0)**
The triple calendar and moonphase complications are well-integrated, offering both utility and elegance, which are rare in this price segment.

- **Movement Metric (8.8/10.0)**
The JLC Caliber 891/448 is an automatic movement known for its reliability and precision. It features a triple calendar complication, enhancing its technical complexity.

- **Functions Metric (8.5/10.0)**
The watch includes a transparent caseback, allowing a view of the movement, and offers water resistance suitable for everyday wear. The power reserve is adequate for regular use.

- **Brand Metric (8.5/10.0)**
Jaeger-LeCoultre is a prestigious brand with a strong heritage in haute horology, known for its innovative designs and technical achievements.

- **History &amp; Innovation Metric (8.3/10.0)**
The Master Control line is celebrated for its rigorous 1000-hour testing, ensuring durability and precision, contributing to its historical significance.

- **Rarity Metric (8.0/10.0)**
The limited production of this model in 18k white gold adds to its exclusivity, making it a sought-after piece among collectors.

- **Versatility Metric (7.8/10.0)**
While primarily a formal watch, its classic design allows for some versatility, suitable for both business and semi-formal occasions.

### Celebrity and Historical Figures:
Jaeger-LeCoultre watches have been favored by numerous celebrities and historical figures. Notably, actor Benedict Cumberbatch has been seen wearing Jaeger-LeCoultre timepieces, highlighting the brand's appeal among discerning individuals who appreciate fine watchmaking.</p>