Seth Thomas Movement Identification

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Seth Thomas movement identification

Seth Thomas movement identification is a fairly easy process. ST clock movements have specific markings that identify them. Their fame began in the Antique days. They were known for making their own movements and clock cases. Of course, the craftsmanship was astounding. After the war era, they did not make anymore clock movements. Instead the use of Hermle clock movements began.

In the end

For the most part, the name Seth Thomas did not stay with one company very long after the war. The outcome of these takeovers are three types of Seth Thomas clock movements. The Antique Seth Thomas were in production during and long before WW2. The use of German units such as Hermle, as well as movements that operate by battery, also began post WW2 by Seth Thomas. Hermle clock movements are German made and of the highest quality. Clockworks offers these types of movements.

Is the clock an antique Seth Thomas?

There are a few ways to tell if the ST is an antique. The easiest way is if there are no pits in the movement plates. Please see the picture below. Notice the pattern on the outer plates. The antique Seth Thomas clock movements never had this design pattern on them. It will have ST with a circle around it for a logo. Additionally, the movement will say made in USA. They may also have a few numbers on it such as 89 or 124. It also means that it is not available new, and made before 1950. A repair would be the only option.

Seth Thomas Movement Identification

Modern Seth Thomas Movement Identification

The picture displays the small bumps, or pits, in the movement plates. This design on the Seth Thomas movement indicates some interesting things. In short, the date of the movement is between 1950 and 1979, and it was made in Germany. This also means have a good chance of getting a new movement from Clockworks. To get a new movement means the cost is a fraction of the price of an overhaul. It will also ship out right away. The clock will be running right away instead of months later. It is not possible to restore a clock movement so it is better than new. To order a new movement, match up the numbers on the Seth Thomas page. If questions please email us.

The content of this website is copyright by Clockworks and written by James Stoudenmire in year 2022

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Dennis Korte
Dennis Korte
2 years ago

I have a Seth Thomas grandfather clock I believe was purchased in 1985. It has 3 weights in cables. Only the center one drops. Is this correct or are all 3 suppose to drop?

Dennis

John Hooper
John Hooper
2 years ago

I have movement for an ST Round Band, stamped with Plymouth. Trying to find the adjustable bob sized right for this clock. Any help?

Paul Gugger
Paul Gugger
2 years ago

I recently moved my Seth Thomas grandfarther clock from one room to another by sliding along the floor. Now the hourly chime goes off at 15 after the hour and subsequent chimes are 15 minutes off. Would you know what caused that and how to fix it? Clock was made around 1985.

Pat Cardin
Pat Cardin
1 year ago

Looking for replacement numbers (just bought the clock) for a clock from 1978. The numbers on the plate are 451-050. The original paper work is with the clock, but it obviously has had a rough life.

Michael Marzolla
Michael Marzolla
1 year ago

I just purchased a vintage Seth Thomas ships clock in a Bakelite case. It has a double-winder mechanism. Does one of the winders wind a chime mechanism? When I wind the clock, it works, and it seems to keep good time. It does not chime.

david e johnson
david e johnson
1 year ago

I acquired a Seth Thomas petite #3 and need a schematic of it to take the clock apart and put it back together successfully

David Newman
1 year ago

I have a ST wall clock with a label on the back that reads 5112 General time Corp. Can I get parts and what is the mfg date on this clock

Glenn Thomas
Glenn Thomas
1 year ago

I have a Seth Thomas “floor” clock (Grandmother? @ 6′-2″) bought at Basco’s (no longer in business – like a walmart) bought it in 1979 for my folks for under $100. Pendulum just stopped. Never moved, fallen etc. i took out the movement and cleaned and used a little clock oil as well. all parts appear fine, suspension spring etc. pendulum is mounted correctly but seems it for some reason needs more room for the 2 ‘teeth” at top to engage the gear to turn minute hand. its possible the weight was pulled up to far but have since gotten the chain/weight lower. Any ideas as to what this may be? i have been looking for a movement to replace existing one which is an A403-010 (possibly manufactured by Hermle?) mine is an A403-010 and ive found an A403-007 – would that work if unable to fix current movement?
Thank you very much

Belinda Campanella
1 year ago

i have a Seth Thomas battered operated clock was my mothers 1978 was when it was made numbers are E687-251 I need a new movement i think. it wont keep time or chime, where can i get one? my husband does some clock repair so hope he can fix it if i can get the right parts.

Robert Parker
Robert Parker
1 year ago

My pre 1867 Seth Thomas column and cornice triple deck mantel clock has the number “18” stamped on the bottom left corner of the lyre (harp) brass movement frame. What does that mean?

Rhonda Henson
Rhonda Henson
1 year ago

I HAVE A SETH THOMAS STARBURST CLOCK WHICH USES A C BATTERY. THE MOVEMENT IS NOT WORKING. TRIED SEVERAL BATTERIES….TOOK THE MOVEMENT OFF AND LOOKS LIKE 71-12 A028-000 HOW DO i GET A REPLACEMENT MOVEMENT?

Richard Frederick
Richard Frederick
1 year ago

I have a US Navy ship’s clock – 7 3/4″ round black face with Seth Thomas US Navy 92875 Made in USA
Movement has a square shape in a circle with ST inside – also stamped on the back plate 10-44 and 5165
I’m trying to determine if this clock is authentic WWII or new replica. Can you advise me?

Richard Frederick
Richard Frederick
1 year ago

Any idea of current value in very good condition?

Richard Frederick
Richard Frederick
1 year ago

Got it! Thanks again for your help.

Richard Frederick
Richard Frederick
1 year ago

Thanks, I appreciate your help!

Sherry Collins
Sherry Collins
1 year ago

Do you have a key for a Seth Thomas Dana No 3 clock?

Susan Currie
Susan Currie
1 year ago
Rating :
     

How does the Seth Thomas SeaSprite Brass Wall Clock Model E335-004 CAT: 1007A get its power? Hand Spring or battery?

SETH THOMAS WALL CLOCK FRONT.JPG
Gina Laird
Gina Laird
1 year ago

I was just wondering what my Seth Thomas mantle clock is worth.

Bob
Bob
1 year ago

Have a ST mantel clock with a face in each corner of the clock. It does have 2 areas to wind it. Is there a special name for this ST ?

Melanie
Melanie
11 months ago

The clock I’m looking at has 4463013 is that an idiot number

Carl Baird
Carl Baird
11 months ago

I have a Seth Thomas 4 jewel clock that appears to be a windup on back side. What puzzles me is that it also has dials on the back to regulate temperature. The serial # is C-2071 and it is about 2 1/2″ wide and about the same depth. It may have been in an automobile or airplane possibly? The front says Seth Thomas, 8 day. Can you help

John Hughes
John Hughes
9 months ago

I have inherited a seth thomas adamantine mantel clock 6 half pillar which i am trying to repair/restore.
the clock mechanism has the ST logo and on the other side the no 4 with a small 2 next to it.
The strike and chime mechanism is missing and the metal plate from which the pendulum hangs is broken. is it worth fixing and where do i get parts replacements?
John

D Lysne
D Lysne
9 months ago

What is Whitt. melody on grandfather clocks?

Janet
Janet
8 months ago

I just acquired a Seth Thomas grandfather clock which is chain driven. It’s not yet set up but I’d like to know how to turn the sound off and on as I can’t seem to locate a way. Thanks

Anne
Anne
7 months ago

I have a 1960’s grandmother clock with three winding holes. Is it possible to not wind one of the holes and silence the chimes?

Barry
Barry
7 months ago

I am looking for a replacement movement or parts for a Seth Thomas marked 4 5/8. Any ideas on a part number?

annette burgin
annette burgin
6 months ago

Antique Seth Thomas Clock No. 296B

Michael Reynolds
Michael Reynolds
6 months ago

I live in Australia. I have two Seth Thomas wall clocks which I bought at auction 32 years ago. Both have run flawlessly until recently. I know nothing about them but I believe they are antique. The Octagonal railway/school wall clock looks to be the older of the two and recently stopped running. It is marked ST surrounded by a diamond and an outer circle. It is followed by the inscription “MADE IN THE USA AMERICA”. Bottom left it is also marked below the winder 8 1/4.

I have removed the movement from it’s case. The only other mark I found anywhere was a pencil incription on the back of the case KE958?

Can anyone tell me the age of this Seth Thomas clock? I’m thinking first decade of the 20th century? I would like to be able to find a replacement escape wheel (40 tooth approx 32mm diameter) plus the correct Verge for the clock. Thank you so much for any help you may be able to provide

John Joseph Ruccolo
John Joseph Ruccolo
5 months ago

How do I get a Seth Thomas clock started after it has been in storage for 40 years? It is a Country Cottage model with Catalog Number 1209 (1209-000). Movement is A206-012. See attached pictures for clarity. I look forward to your reply and thank you very much.

John

Seth Thomas movement.jpg
Ray Gardner
Ray Gardner
4 months ago

I have a Seth Thomas grandfather clock. It has a Franz Hermle 451-050 H 85cm/70.777 movement. The letters AD is stamped above the Franz Hermle name. It says NO (0) Jewels, unadjusted and Made in Germany. The only other marks on the clock is a white tag with the number 987. The clock has 3 weights. How can I tell about how old my clock is?

Marlene
Marlene
4 months ago

Hi James I read your pages on ST clocks. I have a ST antique regulator that is stamped 45N of the back. I cannot find the key What size key would be most likely to fit?
Thanks

Bernd
Bernd
3 months ago

Hello James, I am a collector of ship’s clocks from Germany. I have purchased an old Seth Thomas ship’s clock and would like to repair it. Can you tell me how old the clock is? The seller told me the watch came from his family and was from around 1880. Thank you Bernd

SethThomas3.jpg
Gail L Woods
Gail L Woods
17 days ago

how do I remove weights from clock

Antonio Ruiz
Antonio Ruiz
16 days ago

I NEED TO FIND A SHOP THAT CAN RECONSTRUCT MY GRAND FATHER CLOCK I WAS TRYING TO REPAIR IT BUT WAS UNABLE TO PUT IT BACK TOGATHER

Jeff Morton
Jeff Morton
15 days ago

Can you date a movement for me? On the frame there us an ST ,inside a circle and diamond. It also says Made in US America. Also a 16 stamped on frame. The case is Marsh Gilbert , circa 1830 , originally with wooden movement.
Thank you.- Jeff

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