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The Encyclopedia of Horology

Clock · Mantel clock

Jaeger-LeCoultre Atmos Perpetual Motion Clock

Partially verified

This Jaeger-LeCoultre Atmos clock features a 15-jewel mechanism housed inside a brass and five-panel glass case. The square dial features a white chapter ring with applied gold-tone Arabic numerals at the quarters and dart hour markers, surrounding a skeletonized aperture that reveals the gilded movement components. A fluted cylindrical torsion balance is positioned below the movement. The dial is inscribed 'Jaeger-LeCoultre', 'ATMOS', and 'SWISS MADE', while the auction house reports that the case back is marked 'LeCoultre & Cie, Swiss' and the underside is marked 'LeCoultre & Cie, Metal Caliber 528-8 Swiss'.

Front view of the Jaeger-LeCoultre Atmos clock in its brass and glass case
Front view of the Jaeger-LeCoultre Atmos clock in its brass and glass case — Akiba Galleries. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
www.liveauctioneers.com
Category
Clock · Mantel clock
Maker / attribution
Jaeger-LeCoultre
Reference
Caliber 528-8
Catalogue / lot identifier
0068
Source-reported date
20th Cent.
Country
Switzerland

Source-reported attribution and specifications are not independent authentication. A listing does not establish present ownership, current display, availability or permission to reproduce.

Object description

Dial and Visual Architecture

The mantel clock is housed within an enclosure described by the cataloguer as a polished brass, five panel glass case, resting upon a beveled rectangular brass base. The visible front display features a square dial ring set with applied gold-tone Arabic numerals at the quarters (3, 6, 9, and 12) alongside dagger-style hour markers, while the center of the dial remains open to expose the gilded clockwork mechanism and hands.

A fluted cylindrical balance pendulum is suspended directly beneath the movement assembly, with an integrated locking lever visible at the front left of the base. Inscriptions on the dial read 'Jaeger-LeCoultre Swiss Made, Atmos'.

Evidence for this section
  • “Square dial ring with applied gold-tone Arabic numerals at 3, 6, 9, and 12 alongside dagger-style hour markers”
  • “Open center dial displaying the gilded clockwork mechanism and hands”
  • “Fluted cylindrical balance pendulum suspended beneath the movement”
  • “Beveled rectangular brass base with an integrated locking lever visible at the front left”
  • “polished brass, five panel glass case”
  • “Dial marked: "Jaeger-LeCoultre Swiss Made, Atmos"”

Reported Movement and Markings

The clockwork mechanism is reported by the auction house to feature 15 jewels. Additional identifying inscriptions are cited by the auctioneer as appearing on the exterior metal components rather than the dial face.

According to the listing description, the case back is marked 'LeCoultre & Cie, Swiss' and the underside is inscribed 'LeCoultre & Cie, Metal Caliber 528-8 Swiss'. These marks identify the unit as Caliber 528-8, though neither the case back nor the underside is visible in the provided photograph.

Evidence for this section
  • “15 jewels”
  • “Case back marked: "LeCoultre & Cie, Swiss"”
  • “Underside: "LeCoultre & Cie, Metal Caliber 528-8 Swiss"”

Dating and Physical Condition Limitations

The cataloguer provides a broad chronological attribution of '20th Cent.' and states the clock's origin as Switzerland. Stated physical dimensions are 9.25 inches in height, 6.5 inches in width, and 8.5 inches in length.

Regarding preservation, the auction description notes 'Mild scuffing' alongside a general assessment of great overall condition. The source documentation does not record an individual movement serial number, and mechanical functionality or operational status is not detailed in the listing.

Evidence for this section
  • “CIRCA: 20th Cent.”
  • “ORIGIN: Switzerland”
  • “DIMENSIONS: H: 9.25" x W: 6.5" x L: 8.5"”
  • “CONDITION: Mild scuffing, great overall condition.”

Open research questions

  • What specific serial number is stamped on the movement plate to permit precise dating within the Caliber 528-8 production span?
  • Do physical inspections of the case back and base plate confirm the stated 'LeCoultre & Cie, Swiss' and 'LeCoultre & Cie, Metal Caliber 528-8 Swiss' stampings?
  • What is the operational condition of the pressure-sensitive bellows and internal gear train?

Source evidence

Recorded claims and source quotations for Jaeger-LeCoultre Atmos Perpetual Motion Clock
FieldSource-reported valueSource quotation
Jewels15 jewels“15 jewels”
Case MaterialPolished brass, five panel glass case“polished brass, five panel glass case”
CaliberCaliber 528-8“Metal Caliber 528-8 Swiss”
DimensionsH: 9.25" x W: 6.5" x L: 8.5"“H: 9.25" x W: 6.5" x L: 8.5"”
Dial MarkingJaeger-LeCoultre Swiss Made, Atmos“Jaeger-LeCoultre Swiss Made, Atmos”
Case Back MarkingLeCoultre & Cie, Swiss“Case back marked: "LeCoultre & Cie, Swiss"”
Reported ConditionMild scuffing, great overall condition“CONDITION: Mild scuffing, great overall condition.”

Visible details

  • Square dial ring with applied gold-tone Arabic numerals at 3, 6, 9, and 12 alongside dagger-style hour markers
  • Open center dial displaying the gilded clockwork mechanism and hands
  • Fluted cylindrical balance pendulum suspended beneath the movement
  • Beveled rectangular brass base with an integrated locking lever visible at the front left

Research qualifications

  • The case back and underside markings are not visible in the provided photo and rely solely on the auctioneer's description.
  • A full serial number is not stated in the listing description.

Photograph identity and source facts were screened before import; rights clearance remains pending.

Consulted source

Jaeger-lecoultre Atmos Perpetual Motion Clock - Dec 28, 2023 | Akiba Galleries In Fl

Reviewed 2026-10-21 · Record cd654ee36b

Terms in this record

Glossary explanations for terms named in this object’s record.

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