Updates

October and November 2025

Detailed images of the very rare Riefler type E
National Electric synchronous wall clock
Mauthe/AEG synchron, power reserve mantle movement
A Jundes Electro-Continova badged Magneta
S.I.R.S. marine quartz chronometer
ATO salesman’s demonstration clock
Fischer Magneta ‘silent’ movement
Imperial Clock Co catalogues
…….and original box and papers from a Garrard Portescap movement clock, Ecole d’Horlogerie Besancon notes from the course in electrical horology, a link to the definitive Lux clocks site, Cluses masters reorganised, patents added, errors mixing up three clock companies called Schneider corrected. A number of single images, videos and documents have been added.

August and September 2025

Extensive new images of the Kuhne clock, previously we only had a few
New items: Vaucanson master clock and secondary dial
The Sunrise, a Japanese Bulle-type clock
English translation of the Brillie troubleshooting document and dimensions for Lepaute suspension and translation of installation instructions
TEMCO half second clock in later metal case
Seth Thomas Autoset, a Stromberg master clock
Another Bulle prototype

July 2025

Restoration and set up of Shortt free pendulum 23 from Lick observatory
More Venner electric stopwatches, more images of MS3 and new MK1
A Philips electromagnetic movement from the 1960s
Synchronome Australia account book c1904 listing sources and prices
Wagner documents for install, service and synchronise 2 model EC clocks
Building/restoring the John Wilding version of the Murday balance wheel clock

June 2025

This month a wonderful collection of early documents from the Institute of Engineering and Technology (IET) in London, previously the Institution of Electrical Engineers. These papers are kindly provided from their archive and come from the papers of Sylvanus Thompson, who was closely involved with development of electric clocks from the 1890s onwards.

There is a Gent catalogue from 1905, a 1906 brochure for the UK subsidiary of the Fischer Magneta (Swiss) system, a leaflet for the Remelec clock circa 1900, George Bennett Bowell’s initial name for the clock that later became the silent electric. No examples known to survive. Also the first brochure for the Silent Electric clock Co. circa 1900, the earliest Synchronome brochure 1895 and leaflets from 1895 and 1906, a time service brochure from c1904 and the Synchronome company prospectus draft 1899 with handwritten comments by Sylvanus Thompson.  Also a commercial report on the UK electric clock market written in 1939.
New items include two models of electrically controlled stopwatches by Venner
An early synchronome programmer
More Sangamo items courtesy Les McAllister, a system overview video and the Sangamo Avigator, a clock based navigation system
Photos of Lowne master no 1717 including a video
and manuals for the recent TSC Sokki quartz marine chronometer model 7700 and the Patek Phillipe quartz ZG4 and ZL4N (latter in German)

May 2025

Blodgett signal clock brochure and company history courtesy of the American Clock and Watch museum
A Cauderay marked no 1
Detailed images of Abra movement with video
…and many minor corrections and updates including new company history for Milde, and for Diehl, new ITR service instructions 1938 for model 222, an image of the 24 hour dial of the Bulova Navigator 2 and images of a Junghans W726a movement. A number pf pdf documents that were not searchable have been converted and a new index installed.

April 2025

A very early Synchronome gravity escapement 3/4 second movement
Tiffany Neverwind repair instructions from 1919
Max Moller 3/4 second master clock
New maker from Germany, Löwe Uhrenfabrik Mullheim
Synchro Time systems 1 second master clock
New folder for motor rewound half seconds clocks under Ecole de Cluses incorporating Margnoux

March 2025

Zenith 1 second Ferraris rewind dismantled
A new maker, Fuldensia
Documents on Kienzle car clocks and Smiths car and electric rewound clocks
A Godineau secondary dial
Instructions for modern Campa master clock
Kundo spacetimer clocks and instructions
A Bulle prototype movement that never went into production

February 2025

The Rempe clock company catalogue 1904
Pendulum and escapement theory articles in the Robertson clock folder
Two clocks that we know almost nothing about Dallett and Meridian
Polaris quartz marine chronometer
A clock with Junghans mega watch movement
A new master clock by Eijsbouts 
First of many Sangamo items to come courtesy of Les McAllister’s Sangamo website, advertising catalogue 1927 for dealers
A Favarger seconds impulse controller for secondary dials

January 2025

A standard Electric Clock Co (US) catalogue from 1918
An article on the Prouds / Murday installation at Circular Quay in Sydney
Carat clock by Jaz
New paging dials in the Bürk folder with a new explanatory document
Paging dials also added to T&N, Moser-Baer and Wagner folders
A plain Bürk plain secondary dial
and a number of minor changes and updates to header files

2024

Two new Ferramo Ferraris driven clocks by Bauerle
The later type of Kelvin Hughes quartz marine chronometer
Another 1 second Ericsson master clock
Two early quartz from Staiger, the QC2000 and QC2001
New information and another very early Siemens Shuckert master clock
A less common Bardon pendulum bob design
A second Magneta Fischer with an unusual metal tape driven programmer
A second Omega electromagnetic desk clock
Prud’homme rare early sympathetic pendulum secondary dial
Another Mercer mantle chronometer
A late Mauthe mantle clock with Kienzle 606 movement
An image of the original Holden LR battery holder

Founding Clockdoc team member Jan van Harten passed away on the 8th September 2024. More information here.

A folder for the Supremo electromechanical movement by Schmid and Cie
A new seconds dial Gent Thornbridge with many images
A new folder for the Seiko High Beat clock
Another Milde secondary dial
A Letorey pneumatic dial
External images of the Seiko QC-6TN-R2 quartz marine master
Early Siemens master of 1906 with full restoration images
A Cartier early quartz desk clock
A T&N secondary clock with flip movement
A Milde secondary clock
A Semca / Angelus clock
Disassembly and videos of Self-Winding Clock Co model F movement
Electras kit clock
A MKII synchronome with pulse lengthener and alternate polarity
More information on the Puja calendar clock, now identified as a Burk product
A Self Winding Clock Co wall clock with Pond rotary movement
An early Hipp slave observatory dial no 8563
Mirax car clock with 12v Reform movement
An American Clock Co wall clock
Synchronome 5 second impulse relay for the digital flip clock
Updated images Lowne wall master clock no 642
An original Magneta (Swiss) installation with custom dials in Bucharest
The Robertson clock, a unique clock at Bristol University
A Hipp toggle wall clock by Alexander Steuart
An unknown maker complex strike and chime unit
A Gent mantle slave with C9 movement
Synchronome from Jodrell Bank Observatory
New Hamilton folder with a quartz chronometer-style clock
Another Hettich clock, dome with balance wheel
A prototype tank regulator by the Warren Clock Co. USA
The Smiths Batriclock
A Bardon 1 second regulator
A Magneta wall clock to the 1913 Jabs patent
The first production Wempe 904 quartz chronometer
A Peyer Favarger seconds desktop or workbench slave with early movement
A striking Reclus
A first example of a Gisholt periodograph and some history
A Brillie domestic intercom with clock
An 18 inch late type silvered dial by Gent
A Cotna Ferraris rewound wall clock with programmer
Ericsson with LIP movement with Ferraris rewind
Mini desktop clock with Junghans Astro-quartz movement
An Ergas clock with the Ergas maker name
A similar sounding but completely different Urgos clock
An advertising clock for the Portescap/Secticon universal escapement
Reorganised Tiffany folder with new header information and document
Reorganised Leroy folder. Clocks by other makers moved together.
Another Vigreux Brillie table regulator
New folder for the Crown synchronous by Herschede

2023

A new folder on electrostatic clocks, historical and modern
A clock and telescope time standard by Henry Warren of Telechron
A Gents XC407
Manuals for Seiko quartz QC-6M4 and QC-6M5
A new folder for an d’Arsonval chronoscope
New link to the Silentia wall clock added in 2021 but lost since
Rare industrial Hipp wall slave dial with hand setting mechanism
A linear desk clock with a Kienzle 669a electromechanical insertion movement
A very special Peyer Farvarger glass tank observatory regulator
A Vedette with a new transistorised insertion movement
Restoration of an Ingrams master and new history of the company
A Coventry electric ships clock
A very unusual Puja mains motor clock with calendar
Some Gillett and Johnston master clock set up advice
A new folder for Hettich
A new folder for Hermle with a reform type floating balance
A Roamer microquartz in marine chronometer case
New diagram on the navigation page for full resolution images.
A new movement, the Brillie Delviniotti balance wheel in 2 clocks
A Venner mains frequency monitoring clock
Lowne master clock with programmer or bell ringer
Civilian version of the Omega Megaquartz marine chronometer
An early Omega Megaquartz marine chronometer no. 142
A Lepaute catalogue, undated and history of the company
Seiko QM10 marine chronometer manual
Bardon mantle clock no 476 with images of fine adjuster in the base
Abra watch company history in newspaper cuttings
A new folder for Staiger
A new FAVAG cristaltime master QCM-1 with manual
Another Holden pendulum clock under glass dome
A T&N slave dial with paging hand
A new unknown electromagnetic rewound balance movement, unknown 11
Another CWC quartz marine chronometer with EJ 990 movement
Updated Steuart clock movement in restoration
Remington clock with insertion movement resembling a Reform movement
A new early quartz, the Roamer Micro Quartz marine timer
A new electromagnetic clock, the Rex Mundi world timer 1968 Olympics clock
A second Baume and Mercier early quartz marine style desk clock
Another genuine military quartz marine chronometer by CWC
Our first Cartier clock, quartz alarm clock, movement maker not known
Another Seiko QM10 early quartz marine chronometer
Unknown German Observer/Auber electromagnetic balance wheel movement
Chelsea marine style desk clock with Kienzle movement
A Synchronos low voltage synchronous kit clock from Germany
New folder for Meisei early quartz movement
A new Ulysse Nardin marine style early quartz
New folder for Matthew Norman marine style quartz clock
New Accutron tuning fork marine chronometer Mk2 Swiss

And a new document describing variations in Murday clocks and a survey. Please consider submitting details of Murday clocks in your collection as we try to explore variations in design.

‘unknown makers’ Number 16 is a Favag slave, no. 11 has been removed, a mechanical clock by Vincenti et Cie. Number 14 is thought to be early Siemens and Halske
A Diehl insertion movement disassembled and video
Another modernist transistor ATO wall clock with synchroniser coil
CWC quartz in bulkhead case added
David Perret standard movement restoration story
A rare Bardon slave added, this one in a metal case
Manual for a Seiko QC 6M2 early quartz marine master clock
An unusual early David Perret slave added
An early Wagner slave added
A Princeps type 1 with 30 second impulse circuit
Can you help identify Unknown 28, probably a laboratory impulse generator similar to those by Palmer
David Perret video of rewind
Another Smiths Jeco tuning fork movement with video