Clock · Torsion pendulum mantel clock

Jaeger-LeCoultre Atmos Perpetual Motion Clock

Partially verified

This Atmos perpetual motion clock by Jaeger-LeCoultre is housed in a gilt brass case fitted with glazed panels. The source dates the timepiece to circa 1970. It operates via an 11-jewel movement with a torsion pendulum mechanism designed to be powered by environmental atmospheric variations. The front displays a white chapter ring featuring Arabic numerals at the three, six, nine, and twelve positions alternating with dart-shaped hour markers, paired with gilt hands over an open skeletonized center that exposes the movement wheels.

Frontal view of Jaeger-LeCoultre Atmos clock in gilt brass and glass case — Renaissance Antiques. Rights pending — permission not yet requested. Original source

Catalogue identity

Source: www.renaissanceantiques.com
Category: Clock · Torsion pendulum mantel clock
Maker / attribution: Jaeger-LeCoultre
Reference: Not recorded
Catalogue / lot identifier: JOLE 1 P
Source-reported date: Circa 1970
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

Case Construction and Dimensions

The clock is housed in a rectangular gilt brass case fitted with glazed front, side, and top panels. Direct visual observation confirms the glazed panels enclose the internal movement components and pendulum.

According to the seller's catalog entry, the overall exterior dimensions measure 9 1/2 inches high by 8 inches wide by 6 1/4 inches deep.

Evidence for this section

“Rectangular gilt brass case with glazed side, front, and top panels.”
“gilt brass case and the requisite glass panels”
“9 1/2″H x 8″W x 6 1/4″D”

Dial Display and Movement Visibility

The dial configuration features a white chapter ring encircling an open center that reveals internal brass gears and movement plates. Direct visual observation records the dial markings as 'LECOULTRE' placed below the 12 position and 'SWISS' positioned below 6.

The hour track includes Arabic numerals at the 3, 6, 9, and 12 positions alternating with applied dart hour markers. The seller listing describes the hour markers as sword and Arabic markers with sword hands on a white enamel chapter ring.

Evidence for this section

“White chapter ring inscribed 'LECOULTRE' below 12 and 'SWISS' below 6.”
“Arabic numerals at 3, 6, 9, and 12 alternating with applied dart hour markers.”
“Skeletonized center revealing brass gears and movement plates.”
“The time displays on a white enamel chapter ring with sword and Arabic numeral hour markers, and sword hands.”

Reported Mechanism and Documentation Limits

The clock incorporates an 11-jewel movement with a torsion pendulum mechanism reported by the source to be driven by environmental changes in atmospheric pressure and temperature causing gases to contract and expand. A fluted cylindrical torsion pendulum balance is visibly suspended beneath the movement frame.

The seller dates the clock to circa 1970, although specific caliber designations, reference numbers, and serial stamps are neither recorded in the source text nor legible from the frontal photograph. Commercial claims stating that the piece bears a complete restoration and a one-year warranty represent unverified vendor assertions.

Evidence for this section

“Powered by an 11-jewel movement with a torsion pendulum driven by changes in atmospheric pressure as a mixture of gasses contract and expand.”
“Fluted cylindrical torsion pendulum balance suspended below the movement frame.”
“Circa 1970”
“In addition to the timeless appeal of this horological masterpiece, it also bears a complete restoration and a one-year warranty.”

Open research questions

What specific caliber reference and movement serial number are stamped on the upper movement plate or frame?
Does inspection of the rear bellows canister reveal specific production markings or part numbers corroborating the circa 1970 date?
What specific technical procedures and components were involved in the seller-reported restoration?

Source evidence

Recorded claims and source quotations for Jaeger-LeCoultre Atmos Perpetual Motion Clock
Field	Source-reported value	Source quotation
Maker	Jaeger-LeCoultre	“Swiss Atmos Perpetual Motion Clock By Jaeger-LeCoultre”
Date	Circa 1970	“Circa 1970”
Jewel Count	11 jewels	“Powered by an 11-jewel movement with a torsion pendulum”
Case Materials	Gilt brass and glass	“gilt brass case and the requisite glass panels”
Dimensions	9 1/2″H x 8″W x 6 1/4″D	“9 1/2″H x 8″W x 6 1/4″D”
SKU	JOLE 1 P	“SKU: JOLE 1 P”
Dial Material	White enamel chapter ring (reported by seller)	“white enamel chapter ring with sword and Arabic numeral hour markers”
Hand Style	Sword hands (reported by seller)	“sword hands”

Visible details

Rectangular gilt brass case with glazed side, front, and top panels.
White chapter ring inscribed 'LECOULTRE' below 12 and 'SWISS' below 6.
Arabic numerals at 3, 6, 9, and 12 alternating with applied dart hour markers.
Skeletonized center revealing brass gears and movement plates.
Fluted cylindrical torsion pendulum balance suspended below the movement frame.

Research qualifications

Source claim of a complete restoration and a one-year warranty is commercial and unverified by independent technical reports.
Serial numbers and rear bellows mechanism are not clearly legible from this frontal perspective.

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

Consulted source

Swiss Atmos Perpetual Motion Clock By Jaeger-LeCoultre - Renaissance Antiques

Reviewed 2026-10-21 · Record 9f0cb6a689

Terms in this record

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