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Preliminary identification

Longines 'Diamond Dynasty' Integrated Bracelet Watch, c.1975

Photo reference

1 uploaded photo

Overview

A striking example of 1970s Swiss minimalism, this watch features a stark black 'onyx' style dial with a single diamond at the 12 o'clock position.

Story

The 1970s was a decade of radical experimentation in the Swiss watch industry as makers fought to remain relevant during the 'Quartz Crisis.' This piece represents the shift toward 'jewelry-first' horology, where the watch was designed to be a seamless…

Maker / Origin

Founded in 1832, Longines is one of the oldest and most prestigious names in Swiss watchmaking, famously serving as the official timekeeper for the first modern Olympic Games.

Condition & Value

The bracelet shows significant surface oxidation and darkening, which is common for silver-toned finishes of this era but requires professional cleaning. The dial appears clean, and the crystal shows minimal scratching. The integrity of the integrated mesh is good, which is vital as these bracelets cannot be easily replaced.

Full Research

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

Build on this identification

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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

Signed example with light edge wear and original frame.

$1,280

SOLD

Dealer archive

· Mar 2024

Comparable format with stronger provenance and cleaner surface.

$1,450

SOLD

Marketplace sale

· Jan 2024

Smaller related piece with visible craquelure and trimmed margins.

$980

SOLD

Estate platform

· Oct 2023

Period match with softer condition and weaker subject matter.

$1,150

SOLD

Auction result

· Aug 2023

Close market lane comp with similar material and presentation.

$1,375

SOLD