Preliminary identification

Dumont 17-Jewel Swiss Mechanical Wristwatch, c.1955

Photo reference

4 uploaded photos

Overview

A classic mid-century Swiss manual-wind timepiece featuring a sophisticated 'pie-pan' style textured dial and gold-tone applied markers.

Story

Swiss watchmaking in the 1950s was defined by a race to make watches 'life-proof' for the modern, active man. The 'Incabloc' branding on this dial was a major selling point, signaling that the movement could survive a drop thanks to a tiny, lyre-shaped spring…

Maker / Origin

The movement is signed by 'AD. Allemann Son Ltd,' a respected Swiss manufacturer based in Welschenrohr that specialized in high-quality movements for various export brands.

Condition & Value

The dial shows a light, honest 'patina' or spotting consistent with age, which many collectors prefer over a refinished surface. There is visible dirt and minor oxidation around the lugs and case back, and the crown shows some wear to the plating.

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