Clock · Electric master clock

Synchronome Electric Master Clock

Partially verified

An early 20th-century electric master clock attributed to Synchronome, housed in an oak case measuring 127 cm in height. According to the auction description, the glazed door encloses a 6.5-inch silvered dial with Roman numerals and an electric magnetic movement operating with a steel rod pendulum and cylindrical bob. Visible inside the open oak case is a black cast A-frame support bearing electrical coils, contacts, wiring looms with retainers, and the rear movement assembly mounted behind the door dial.

Open oak case of the Synchronome master clock showing internal wiring and electrical movement components — Hutchinson Scott Limited. Rights pending — permission not yet requested. Original source

Catalogue identity

Source: www.invaluable.com
Category: Clock · Electric master clock
Maker / attribution: Synchronome
Reference: Not recorded
Catalogue / lot identifier: 1216
Source-reported date: Early 20th century
Country: United Kingdom

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 Exterior Housing

The clock is housed in an oak case reported to be early 20th century and measuring 127 cm in height. The front door is glazed and hinged to open.

Observation of the open case reveals that the door rebate is lined with green baize or felt. As photographed, the front door is swung wide open, exposing the interior mounting and backboard fittings.

Evidence for this section

“AN EARLY 20TH CENTURY OAK CASED SYNCHRONOME ELECTRIC MASTER CLOCK”
“(127cm high)”
“Oak case with green baize or felt rebate lining the door opening.”

Electro-Mechanical Assembly and Wiring

Inside the case, a black-painted cast-metal A-frame plate is mounted to the backboard, holding electro-mechanical switchgear, coils, and terminal posts. A secondary electrical relay or coil assembly is positioned on the backboard directly below the primary frame.

The interior contains a wire harness secured by retainers along the inner right flank of the case. Along the upper inner left wall, three cylindrical wire-wound components are arranged vertically.

Evidence for this section

“Black painted cast-metal A-frame mounting plate holding electro-mechanical switchgear, coils, and terminal posts.”
“Additional electrical relay or coil assembly mounted below the main cast frame on the backboard.”
“Wire harness clipped along the inside right edge of the case.”
“Three cylindrical wire-wound components mounted vertically along the inner left wall.”

Dial and Mechanism Reports

The auction catalogue describes the front glazed door as enclosing a 6.5-inch silvered dial with Roman numerals, fronting an electric magnetic movement operating with a steel rod pendulum and a heavy cylindrical bob.

In the primary reference photograph, the front door is open, displaying the rear casing of the dial and movement mechanism mounted to the door frame. The dial face itself, the pendulum rod, and the cylindrical bob are not visible in the provided image.

Evidence for this section

“the glazed front door enclosing a 6.5" silvered dial with Roman numerals fronting an electric magnetic movement with steel rod pendulum and heavy cylindrical bob.”
“Glazed front door swung open, showing the rear casing of the dial and its movement mechanism.”
“Pendulum rod and bob are absent from the interior in this view.”

Open research questions

Are the steel rod pendulum and cylindrical bob preserved separately with the lot, and what are their physical dimensions?
Are there specific serial, model, or patent stamps present on the cast A-frame or movement casing?
What specific functions do the three wire-wound cylindrical coils along the upper left interior wall serve in this circuit configuration?

Source evidence

Recorded claims and source quotations for Synchronome Electric Master Clock
Field	Source-reported value	Source quotation
Case material	Oak	“AN EARLY 20TH CENTURY OAK CASED SYNCHRONOME ELECTRIC MASTER CLOCK”
Dial diameter	6.5 inches	“enclosing a 6.5" silvered dial”
Numeral type	Roman numerals	“with Roman numerals”
Movement type	Electric magnetic movement	“an electric magnetic movement”
Pendulum details	Steel rod pendulum with heavy cylindrical bob	“with steel rod pendulum and heavy cylindrical bob”
Height	127 cm	“(127cm high)”
Overall height	127 cm	“(127cm high)”
Dial specification	6.5 inches, silvered, with Roman numerals	“enclosing a 6.5" silvered dial with Roman numerals”
Movement description	Electric magnetic movement with steel rod pendulum and heavy cylindrical bob	“an electric magnetic movement with steel rod pendulum and heavy cylindrical bob.”

Visible details

Oak case with green baize or felt rebate lining the door opening.
Glazed front door swung open, showing the rear casing of the dial and its movement mechanism.
Black painted cast-metal A-frame mounting plate holding electro-mechanical switchgear, coils, and terminal posts.
Wire harness clipped along the inside right edge of the case.
Three cylindrical wire-wound components mounted vertically along the inner left wall.
Additional electrical relay or coil assembly mounted below the main cast frame on the backboard.
Pendulum rod and bob are absent from the interior in this view.

Research qualifications

The dial face, pendulum rod, and cylindrical bob described in the auction text are not visible in the provided image.
Operational completeness and functionality are unverified.

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

Consulted source

Sold at Auction: SYNCHRONOME MASTER CLOCK

Reviewed 2026-10-21 · Record bd2a9e69e9

Terms in this record

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