Preliminary identification

Jaeger-LeCoultre Atmos Clock, Model 528-6

Photo reference

1 uploaded photo

Overview

This is a classic Jaeger-LeCoultre Atmos clock, a marvel of horological engineering that literally runs on thin air. Encased in a brass and glass cabinet, it features a round, cream-colored dial with elegant gold-toned dart indexes and Arabic numerals at 3, 6, 9, and 12. The visible movement showcases the mesmerizing, slow-rotation pendulum that is the hallmark of the Atmos design.

Story

In 1928, Swiss engineer Jean-Léon Reutter built a clock powered solely by atmospheric changes. Jaeger-LeCoultre patented the design, creating an icon that became the official gift of the Swiss government to world leaders.

Maker / Origin

Jaeger-LeCoultre, founded in 1833 in the Vallée de Joux, is one of Switzerland's most prestigious watchmakers, known as the 'watchmaker's watchmaker.' They have produced over 1,200 unique calibers and hold hundreds of patents. The Atmos remains one of their most famous and enduring creations, representing the pinnacle of perpetual motion research.

Condition & Value

The brass casing shows visible tarnishing, minor pitting, and surface wear consistent with age. The dial and hands appear clean, and the glass panels are intact. The operational status of the bellows and movement is unverified; non-running units require expensive specialized restoration which reduces immediate market value.

Full Research

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Sold comps, value drivers, and venue guidance pulled from recent auction results.

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Market Analysis

Comparable demand stays strongest where maker, originality, and venue confidence line up. Broader examples still trade, but the range tightens quickly when provenance, condition, or selling lane fit is missing.

Value Drivers

  • Strong maker attribution with credible period details
  • Better-than-average condition for the category
  • Broader demand rises when presentation and finish feel intact

Concerns

  • Decorative-only demand limits the ceiling
  • Surface wear or missing provenance can compress the range fast
  • Regional sale lanes often underperform specialist venues

Best Venue

Specialty auction or a focused dealer with buyers already in this lane.

Comparable Sales

5 comps
Regional auction· Jun 2024
$1,280

Signed example with light edge wear and original frame.

Dealer archive· Mar 2024
$1,450

Comparable format with stronger provenance and cleaner surface.

Marketplace sale· Jan 2024
$980

Smaller related piece with visible craquelure and trimmed margins.

Estate platform· Oct 2023
$1,150

Period match with softer condition and weaker subject matter.

Auction result· Aug 2023
$1,375

Close market lane comp with similar material and presentation.