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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Louis Rosales
Louis Rosales
1 month ago

was given a Seth Thomas parlor clock that is missing the pendulum bob. the movement markings are :
S. THOMAS
THOMASTON CT.
U.S.A.
Also a Dimond inside of a circle with the letters ST inside of the diamond. there is the numbers 5 7/8 stamped on it and under those numbers there is 1/2 stamped. clock seems to work fine and chimes correctly. would like to know what type of bob to find so I can proudly display and use it.
Thanks in advance.

Louis Rosales
Louis Rosales
1 month ago

I am not really interested in restoring it as its value to me comes more from where I received it. I am also not to concerned that it keeps perfect time only that it is approximate. I also found that the hammer for the alarm gong has apparently broken off from the pivot as it is missing also. I would be interested in just finding a suitable replacement for both the pendulum bob and for the hammer.
Thank you for your quick reply.
Louis Rosales

edward john croke
edward john croke
1 month ago

Have a Royal Seth mantel clock from Thomaston. Hermle movement backplate is bumpy/pitted
and has movement number A403-102. Under this is the number 8106. Clock appears to be in very good condition, but seems to need either repair or a new movement to make it function. Cant find this movement in Clockworks list.
This is the same model that was ceremonially burned in 1943. Any advice?

Mark Scott
Mark Scott
2 months ago
Rating :
     

Did Seth Thomas hand inscribe an S and a T on the winding on in the inside?

Don Gedye
Don Gedye
2 months ago

Can anyone give me the year that the Hermle 350-060 movement dates from?
It is is my old Seth Thomas – I’m guessing early 1950s????

Sandra
Sandra
3 months ago

I have a Seth Thomas Black Matte Quartz Seasprite II Ships Clock and would like to know when they were manufactured, and what the case material is and where it was manufactured. Model 1028G.

Thank you for any help you can provide.

Sandra
Sandra
3 months ago

It says: Cat.# 1028G (1028-007) Quartz Seasprite II, and then there are numbers running up the side of the tag that say: 021187, and the clock movement itself is just a standard Japanese quartz clock movement.

Thank you for your response!

Fred Sumner
Fred Sumner
3 months ago

Hello. I just received a Seth Thomas grandfather clock, that I believe is either 1960s or possibly late 1980s and trying to date. It has a German-made Jauch movement No A407-000. Under the stamped (into the plate) name “Jauch” there is the number 96 and on the printed label it says “Made in Germany for Seth Thomas; Thomaston, CONN, USA”. Any guidance would be appreciated. Thanks, Fred

Don Gedye
Don Gedye
2 months ago
Reply to  Fred Sumner

Fred – ignore my post below – I missed the part that you said it was a Grandfather clock. I can not say how they were stamped. Sorry

Don Gedye
Don Gedye
2 months ago
Reply to  Fred Sumner

Check what is stamped again Fred. The reason I say that is in 1950 Westclox and Seth Thomas mergerd under a holding company “General Time”. After that the back plates were reportedly stamped “Made in Germany for Seth Thomas a Division of General Time”. In 1970 Talley Industries did a hostile takeover of General Time and the plates were then stamped “Made in Germany for Seth Thomas a Division of Talley Industries”. In 1982 Talley ordered the closing of the Conneticut clockworks and moved everything to Athens, GA. IN 1988 General Time was bought back by stockholders – it went out of business in 2001. Colibri got the Seth Thomas stuff. It is now owned by Alliance Time and they are throwing the Seth Thomas name on everthing they can.

Pete
Pete
3 months ago

I have a 1979 Seth Thomas grandfather clock and would like to know can I buy a replacement movement or could I clean and oil it?

Melody
Melody
3 months ago

My set thomas movement has an 89m on one part and a 90 on the other. Says Made in U.S.AMERICA.
There is a 0 stamped on the wood in back. Face says Set Thomas Senora Chime and there is an SF by the center hole. Sure wish it worked!!

Don Gedye
Don Gedye
3 months ago

I have an old Seth Thomas “Royal Seth” mantle clock – from the Talley years. It has a Hermle 1050-020 movement from my research. I cleaned the movement with a spray acetone electronics cleaner spray to remove the build up of old oil on it. (Looked like someone had sprayed it with WD40). I then lubricated it with Liberty synthetic clock oil. I ran it for a week prior to cleaning it and it actually kept good time. Now, it runs slow – about 5 min per day. The speed adjustment is all the way to + side. Any idea what could be causing it to run slow? I’ve worked on clocks before and always had good luck bringing them back to life – but I’m clocksmith. This is the first time this has happened to me.

Don Gedye
Don Gedye
3 months ago

Thanks James. I suspected.that would be the answer!

EDWIN HAROLD WALDROP JR
EDWIN HAROLD WALDROP JR
3 months ago

Where can I find the correct hand nut for Hermle A206-012 (Seth Thomas 1209)

EDWIN HAROLD WALDROP JR
EDWIN HAROLD WALDROP JR
3 months ago

will these fit the Hermle 131-030 movement?

Eric Tibbetts
Eric Tibbetts
4 months ago

I have a ST 120-J movement in a banjo clock. It has three marks on the movement plate; 120-J; 11-40; and 4 41. The first is obviously the model number. What do the other two marks indicate?

Lisa Morton Mills
Lisa Morton Mills
4 months ago

I have a family owned Seth Thomas Exeter-W 8 day model E 538-001, A206. The label states made in Thomaston Connecticut. My Daddy died in 2000 and he was the clock lover. The set knob location “A” in the center of the back of the clock is missing its knob. Is it possible to buy that replacement knob? The set knobs on either side of it are there, solid metal and each one feels like they are wound but the clock will not run without the center set knob. Is it possible to get a replacement for that know A? I was born in 1958 and know this clock has been around all my life, so it is important to me.

Gail Havens
Gail Havens
6 months ago

Hello – I am trying to help my elderly uncle get the time and chime synched on his old Seth Thomas mantle clock. The number on the movement is 63194. At 2:00, it chimes 12 times. Do we turn the hands backwards or do something else to get in corrected? Any help much appreciated. Gail Havens

movement and usa stamp.jpg
Sam Maples
7 months ago

Hello,
I have a SETH THOMAS #A208-005 7003 that runs fast after fully winding… Gains about 3mins every hour.. it will slow down after a few days of running but speeds back up when the 8day comes around and it is time to wind again. I have been trying to find a clean picture of the balance wheel because i can not seem to locate the tabs above the wheel to adjust to slow the clock down. do you happen to have a pictre i can use? or have any idea what the tabs look? or instructions on how to adjust? Any help would be great thanks in advance for your support.

Valerie Schick
Valerie Schick
8 months ago

I have a Seth Thomas, 8 day, quarter hour chime mantle clock, and I’d like to know if anyone could date it. Its in excellent condition.

Matthew Dollinger
Matthew Dollinger
5 months ago

Hello!

I have the same question.

The logo on the plate (which is smooth) is ST in a diamond within a circle (upper left). On the lower left is the number 89J.
The label is shot except for part of the word Sentinal an what I believe is part of a 7.
The hands have an S and a T at their bases (S on min a T on hour).

I picked this up at (of all places) a car junk yard and it’s in pretty sad shape. I’m trying to decide if I should leave it be (is it special…or more special) or if I can be comfortable repairing the case myself.

Paul
Paul
8 months ago

This is more of a comment as I just came into an OB McClintock bank clock that was turned into a Grandfather clock of sorts. I have a friend that works on clocks and he just basically cleaned and oiled the movement which is a Seth Thomas 85A, he says 1917. My wife saw it an estate sale down the road. The clock has been running over a month now and keeps perfect time. It looks original ( aside from the added base ) with the stained glass door and 2 locking mechanisms for the door. It used to have electricity hooked up to it to run the banks chimes which were separate. Enjoying your website.

Richard Ehlke
Richard Ehlke
8 months ago

I have a brass quartz rapture seth thomas desk clock. The movement simply says Rhythm Watch Co and does not have the identifying numbers you discuss. Any way to identify this and order a new movement?

Juan KIng
Juan KIng
10 months ago

Hi! I have just picked up a clock that my great-grandmother had this are the Letters and numbers I see. SETH THOMAS
4471 1194 403 015 26 – I don’t really have a clue what this means.

James ( JT Jones
James ( JT Jones
10 months ago
Reply to  Juan KIng

Is it possible to share how did you arrive at that conclusion with just numbers.

James ( JT Jones
James ( JT Jones
10 months ago

Thank you.

Jeff Morton
Jeff Morton
1 year 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

Antonio Ruiz
Antonio Ruiz
1 year 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

Gail L Woods
Gail L Woods
1 year ago

how do I remove weights from clock

Bernd
Bernd
1 year 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
Marlene
Marlene
1 year 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

Ray Gardner
Ray Gardner
1 year 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?

John Joseph Ruccolo
John Joseph Ruccolo
1 year 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
Michael Reynolds
Michael Reynolds
1 year 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

annette burgin
annette burgin
1 year ago

Antique Seth Thomas Clock No. 296B

Barry
Barry
1 year ago

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

Anne
Anne
1 year 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?

Janet
Janet
1 year 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

D Lysne
D Lysne
1 year ago

What is Whitt. melody on grandfather clocks?

John Hughes
John Hughes
1 year 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

Carl Baird
Carl Baird
1 year 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

Melanie
Melanie
1 year ago

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

Bob
Bob
2 years 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 ?

Gina Laird
Gina Laird
2 years ago

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

Susan Currie
Susan Currie
2 years 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
Sherry Collins
Sherry Collins
2 years ago

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

Richard Frederick
Richard Frederick
2 years 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
2 years ago

Any idea of current value in very good condition?

Richard Frederick
Richard Frederick
2 years ago

Got it! Thanks again for your help.

Richard Frederick
Richard Frederick
2 years ago

Thanks, I appreciate your help!

Rhonda Henson
Rhonda Henson
2 years 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?

Robert Parker
Robert Parker
2 years 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?

Belinda Campanella
2 years 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.

Glenn Thomas
Glenn Thomas
2 years 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

David Newman
2 years 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

david e johnson
david e johnson
2 years 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

Michael Marzolla
Michael Marzolla
2 years 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.

Pat Cardin
Pat Cardin
2 years 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.

Paul Gugger
Paul Gugger
3 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.

John Hooper
John Hooper
3 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?

Dennis Korte
Dennis Korte
3 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

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