Jaeger-LeCoultre Atmos du Millénaire Atlantis Clock, 1999

Technical characteristics

Type

Atmos clock

Maker

Jaeger-LeCoultre

Model

Atmos du Millénaire 'Atlantis'

Dimensions

27 x 25 x 14 cm

Case material

Stainless steel and glass

Place recorded

Switzerland

Condition grade

AA Very good

Production date

From 1999

Movement mechanism

Vacuum chamber and annular tension pendulum

Maker / attribution

Jaeger-LeCoultre

Design

Visible features

• Wedge-shaped glass case with three conical feet • Outer spiral calendar scale reaching the year 3000 • Blue painted months disc located above the center • Integrated spirit level on the base

Case and Dial Design

The clock features a distinct wedge-shaped housing composed of bevelled glass panels, providing visibility into the movement from multiple angles. It rests upon three conical stainless steel feet, which elevate the structure. A spirit level is inset into the base to assist with leveling, which is necessary for the function of an Atmos clock. The white lacquered dial is marked with painted baton indexes and an inner minute ring. Above the central axis is a blue painted disc indicating the months. Below the center is an aperture for the moon phases and a lunar calendar. A significant feature of the dial is the outer spiral scale, which is calibrated to display each year until the year 3000. The hour and minute hands are blued, while the year-tracking hand is finished in white and blue.

Condition and Attribution

The auction description reports the clock's condition using a professional grading system. The overall grade for the lot is listed as 'AA', classified as very good. The individual components are evaluated as follows: the case is graded 3 (good), the movement is graded 2 (very good), and the dial is graded 3-01 (good). The hands are noted as original. The object is attributed to Jaeger-LeCoultre and identified as the 'Atlantis' version of the Atmos du Millénaire. Production of this model began in 1999 with a limited output of 50 units per year. The case bears the signature of the manufacturer. The source document characterizes the object as a 'very fine' example of this barometric timepiece.

Movement and Power Source

The clock operates as a barometric change-driven timepiece, a signature design for the Atmos series. The stainless steel movement utilizes a sealed vacuum chamber that responds to temperature and barometric pressure fluctuations, which in turn winds the going barrel. This mechanism removes the requirement for manual winding. The escapement is a lever type, controlled by an annular tension pendulum. The movement includes a locking lever located above the pendulum disc for safety during transport or storage, and a regulator situated at the top of the movement structure. The design prioritizes minimal energy consumption, allowing the barometric winding system to maintain continuous operation.

Identification

Source note

Facts transcribed from the linked source listing or collection record. Attribution and specifications are source-reported and have not been independently authenticated.

Catalogue references

No catalogue numbers recorded. Numbers are only published once transcribed from a verified edition of a standard catalogue — they are never inferred.