Jaeger-LeCoultre Reverso Grande Duoface Blue Q378858J

Opening Context
Since its introduction in 1931, the Jaeger-LeCoultre Reverso has stood as one of watchmaking's defining designs, originally conceived to protect its dial during polo matches while embracing the clean geometry of the Art Deco era. Over the decades, the reversible case evolved beyond its sporting origins into a platform for mechanical creativity, with the Duoface concept introducing a second dial that expanded the Reverso's functionality without compromising its distinctive character.

Why This Reference Matters
Reference Q378858J pairs the elegant proportions of the Grande Reverso Ultra Thin case with the practical Duoface complication, allowing two time zones to be displayed through a single manually wound movement. The vivid blue lacquered front dial pays tribute to coloured Reverso models from the 1930s, while the reverse presents a refined silver guilloché display featuring a second time zone, day/night indication and small seconds. Powered by Jaeger-LeCoultre's in-house Calibre 854/1, it remains one of the most distinctive modern interpretations of the Reverso.

On the Wrist
The rectangular case wears with an elegance unique to the Reverso, offering a slim profile that slides comfortably beneath a cuff while maintaining a reassuring presence on the wrist. The blue dial introduces warmth and personality without overwhelming the watch's restrained architecture, while the reversible case transforms the wearing experience by allowing the owner to alternate between two distinct identities depending on the occasion.

Condition & Transparency
This example features a stainless steel Grande Reverso Ultra Thin case with the signature reversible construction, a blue lacquered front dial, a silver guilloché reverse dial displaying a second time zone with day/night indication and small seconds, and a green suede leather strap fitted with a stainless steel Jaeger-LeCoultre pin buckle, as shown in the accompanying images. As always, particular attention should be given to case condition, dial preservation, movement performance, strap/bracelet condition, and overall set completeness—communicated strictly on verified information.

Why It Belongs in a Collection
The Grande Reverso Ultra Thin Duoface Blue suits collectors who appreciate watches that balance design heritage with genuine mechanical ingenuity. It offers the timeless appeal of the Reverso while introducing useful travel functionality and a distinctive colour palette, making it an excellent complement to more traditional round watches within a carefully considered collection.

Closing
Elegant, mechanically thoughtful and unmistakably Jaeger-LeCoultre, the Grande Reverso Ultra Thin Duoface Blue demonstrates how a historic design can remain relevant through subtle evolution. It is a watch that rewards long-term appreciation, revealing new details each time its case is turned.

Specifications

• Case Size: 46.8 mm x 27.4 mm
• Case Material: Stainless Steel
• Strap: Black Leather Strap with Stainless Steel Pin Buckle
• Dial: Blue lacquered front dial with baton markers | Silvered reverse dial with a "Clous de Paris" guilloché pattern, a 24-hour indicator at 6 o'clock, and a day/night indicator.
• Power Reserve: Approx. 45 Hours
• Movement: Manual Winding (Calibre 854/1)

Shipments are delivered under Delivered Duty Unpaid (DDU) terms, with duties and taxes payable by the recipient.