Preliminary identification

Marine Bulkhead Clock, likely Chelsea or Seth Thomas style

Photo reference

1 uploaded photo

Overview

A heavy brass-cased marine bulkhead clock featuring a classic Roman numeral dial and a sweep seconds hand. These robust timepieces were engineered to withstand the vibration and corrosive salt air of life at sea.

Story

Before digital GPS, these clocks were the heartbeat of a ship. Precision timing was a matter of life and death for navigation. This clock likely hummed along in a radio room or engine room, keeping the crew in sync with the world.

Maker / Origin

While the dial is currently unsigned, the 'S/F' (Slow/Fast) adjustment lever and the winding arbor position are characteristic of major American makers like Chelsea Clock Co. or Seth Thomas, who supplied the Navy and merchant fleets for decades.

Condition & Value

The brass case shows a lovely natural patina consistent with age. The dial has some minor discoloration, and the hands appear original. Functional status is unknown; a non-working movement typically reduces value by 50%.

Full Research

See what it's actually worth.

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

Build on this identification

Layer in sold comps, value drivers, and venue guidance.

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.