The history of this Jaeger-LeCoultre Master Ultra Thin Date
Jaeger-LeCoultre has distinguished itself through its rigorous approach to mechanical watchmaking since its foundation. The Master collection was launched in 1992 to meet strict specifications combining reliability with a sleek design. This Master Ultra Thin Date model, reference Q1238421, follows in this tradition by offering a understated city watch, designed for everyday wear. The history of this range is closely linked to the development of the in-house 1,000-hour testing protocol. Unlike industry standards, which often assess the bare movement, the manufacture tests the fully assembled watch for 41 consecutive days. The timepiece undergoes temperature, shock and water-resistance tests in six different positions. This hallmark of quality, engraved on the sapphire caseback, guarantees a proven level of precision.
Case, calibre and strap of this Master Ultra Thin Date
The 39 mm case is crafted from stainless steel and features a full polish finish across all its surfaces. At just 7.8 mm thick, the watch slips easily under a shirt sleeve. The silver-coloured dial features a sunburst finish that captures and diffuses light in subtle ways. The hours are marked by rhodium-plated arrow-shaped hour markers, over which dauphine hands glide. The date window is positioned at 6 o’clock. The watch is powered by the Calibre 899, a self-winding movement comprising 219 components, including 32 jewels. This mechanism beats at a frequency of 4 Hz and delivers a power reserve of 38 hours. It is visible through the open case back, revealing an openwork gold oscillating weight and bridges decorated with Côtes de Genève. The watch is water-resistant to 50 metres. It is fitted with a black alligator leather strap featuring large scales, secured by a steel folding clasp.
Why this Jaeger-LeCoultre watch
On the pre-owned market, this model stands out for its understated design and the quality of its technical craftsmanship. The silver dial paired with stainless steel is a classic combination for a dress watch. The flat profile of the case meets the demand for watches that are discreet and comfortable on the wrist. This example features a ‘Jubilé 10 ans’ engraving on the case back, confirming its origins as a corporate gift watch.
Contents and condition
This watch is supplied with its presentation box, cardboard outer box and original user manual. The warranty card is missing from the set. The watch is in mint condition. It has never been worn and retains all its factory protective plastic film on the case, sapphire crystal caseback and folding clasp. The alligator strap shows no warping or signs of wear. This condition guarantees the buyer complete aesthetic integrity.
Warranty and delivery
The Swiss Collector guarantees the authenticity of this item. We offer a 24-month mechanical warranty. We accept returns within 10 days in accordance with our terms and conditions. As Switzerland’s leading second-hand retailer, backed by the largest network of shops, we offer online booking for a fitting and collection in-store, or fully secure international delivery.
* As good as new – a new watch, never worn or in exceptional condition. No defects visible to the naked eye.
