Jaeger-LeCoultre Ultra-Thin ref. 4441.20 18K Gold

Jaeger-LeCoultre ref. 4441.20 is an elegant Swiss vintage watch with manual winding, dating from around 1970. The model combines a classic 18-karat gold case, a white dial, a hesalite crystal, and an ultra-thin Jaeger-LeCoultre Calibre P838 movement.

This particular piece has a case diameter of approximately 33.5 mm without the crown, a thickness of approximately 5.5 mm, and a lug-to-lug measurement of approximately 38 mm. It is an exceptionally slim dress watch, suitable for those who appreciate traditional watchmaking, precious materials, and discreet vintage styling.

Movement

At the heart of the watch is a mechanical hand-wound movement, the Jaeger-LeCoultre Calibre 838, often designated as P838. The caliber was introduced in 1962 and is one of the most highly regarded ultra-thin movements of its era.

The movement operates at a frequency of 18,000 vibrations per hour, has 18 jewels, and offers approximately 36 hours of power reserve. The construction uses a lever escapement, a monometallic balance, and a flat balance spring.

Manual winding means that the watch requires regular winding via the crown. For many collectors, this is an important part of the daily interaction with a classic mechanical watch.

Case and Dial

The case is made of 18-karat gold and has a classic, round shape. The case diameter is approximately 33.5 mm without the crown, the width with the crown is approximately 34.5 mm, the thickness is approximately 5.5 mm, and the lug-to-lug measurement is approximately 38 mm.

The watch features a snap-on case back, an original crown, and a hesalite crystal, typical for vintage watches. The slim case construction is one of the most important distinguishing features of this model.

The white dial is designed in a restrained, elegant style appropriate for classic dress watches. Its calm form emphasizes the proportions of the watch and the timeless character of the Ultra-Thin model.

Strap

The watch is equipped with a strap suited to the elegant character of the model. The strap complements the gold case well and emphasizes the formal, classic styling of the watch.

The exact type, color, and condition of the strap are presented in the product photos. Before finalizing the purchase, it is possible to individually discuss the potential replacement of the strap with a variant that meets the client's preferences.

Condition, Set, and Warranty

The watch is a used, vintage, and collectible item. It may show natural signs of age, storage, use, or previous servicing. Detailed visual condition is presented in the product photos, which form an integral part of the description.

The scope of the set, documentation, and any accessories will be confirmed individually before finalizing the purchase.

The scope of any Dial-House warranty for the correct functioning of the movement is determined individually and communicated to the client before the transaction is concluded.

Key Information

Brand: Jaeger-LeCoultre
Reference: 4441.20
Line: Ultra-Thin
Year: circa 1970
Movement: Jaeger-LeCoultre Calibre 838 / P838
Movement type: mechanical, hand-wound
Frequency: 18,000 vibrations per hour
Power reserve: approximately 36 hours
Jewels: 18
Escapement: lever
Case: 18-karat gold
Case diameter: approximately 33.5 mm without crown
Width with crown: approximately 34.5 mm
Case thickness: approximately 5.5 mm
Lug to lug: approximately 38 mm
Case back: snap-on
Crown: original
Dial: white
Crystal: hesalite / acrylic
Strap: as per product photos
Set: as per photos and information provided before purchase
Warranty: scope determined individually
Condition: used, vintage, collectible