Clock Movements

Why a new clock movement?What happened to the old one?How to order the clock movementIdentifying the movement

A new mechanical clock movement can ship from USA the same day you order it, so the time it takes you to get you're clock up and running is very short. A repair can usually take months and then you are still left with a used overhauled movement rather than a new one.

When you receive a new movement it is the same as you're old movement, so all clock components will fit on to the new movement. The cost of a new movement is usually the same if not less than a cleaning on the old unit, and when it's installed it should last another 25-30 years without thinking about replacing or servicing it again. Some new units have bronzed bushings in key wear areas to increase the life of the movement, and on the non-pendulum units the balance has been improved upon for longer life and ease of timing. We here at Clockworks offer only the highest grade mechanical clock movements and they come with a 2 year warranty.

If the mechanical clock movement is 25 years old or more, the clock oil has solidified into this black sticky tar substance. This tar substance causes resistance (rather than lubrication) and wear on the clock movement.

This wear takes place in the holes that are in the brass plates and is hard to identify sometimes. These holes in the brass plates become oblong instead of round and this pinches the pivot arbor going into it. Between this, and the solid oil, the clock ceases to function. To have this repaired is an expensive and long process. To have a mechanical movement serviced can cost hundreds, if not over, a thousand dollars and in some cases it can take weeks to complete it.

The first step is to identify the country of origin of the mechanical clock movement. If the mechanical movement is stamped made in Germany or West Germany, then the availability of this is much higher and you are on the right page.

If the clock is made in any other country such as USA, France, Korea, or China, then you need to contact us via email with pictures of the movement to [email protected] so we can try to help with either a repair or replacement. The second thing to do is to use the numbers that are on the back plate of the German mechanical movement to determine who manufactured it. Using the examples below, narrow down the manufacturer of you're movement and go to that web page to order. When you get to the proper movement on the website, do not worry if the picture is not exactly the same as what you have. The matching of the mechanical clock movements number is what makes the difference. If the old movement number matches the one on the list, then you will get that exact same movement.

  • Less cost than a cleaning in most cases
  • Should last 25-30 years, a repair would not
  • Easy to install, we can help if needed
  • Ships same day as order

The numbers on the back plate of the brass movement tells us the Mechanical Clock Movement Identification. Although it may not say the manufacturer on the movement, the numbers will give us this information.

The movement numbers also usually tells us the way the clock chimes, where the chime hammers are located, if it's weight or spring driven and much more. So with the movement numbers we can have a replacement clock movement that is not a knock off version, it is the same movement that was made the same as the old one. Usually all the old parts such as the clock weights, pendulum and hands will all work with the new movement, as the new one will be the exact same thing as you're old movement. mechanical clock movement

Assistance = 800-381-7458

Hermle mechanical clock movement identification

Hermle Movement Availability

The availability, at this time, is excellent. We stock all Hermle Clock Movements, with very few exceptions. Some special CM lengths may be a special order.

If it's not on the charts then it most likely will have to be made up special for an extra $20. This is a special order so please call it in.Read More »

Hermle is one of the biggest movement producers in the world today. Not only do they have the most movements being made, but they also have the best part availability when you need a component such as a pendulum or a dial, or a complete clock kit.

A Hermle Clock Movement generally lasts 25 to as much as 40 years. We usually get calls to replace units that were built in the early 80's or late 70's.

If you look at the back plate of the movement, you will see a couple of numbers above all the other numbers. You will see a number such as a 77 or an 83 or so on. This is the date the movement was built.

Replacing these units rather than getting them cleaned and oiled is usually the smart way to go as it has been factory improved, brand new, factory lubricated, easy to install, and it will cost less than a cleaning. Keep in mind however, that there are different grades of the same movement number. Some are cheaper, but they contain plastic parts.

The Hermle units that we offer here at Clockworks are the best grade available with no plastic components for a very reasonable price. The movement number has three or four numbers, then a dash, and some more numbers, then a CM length underneath it if there is a pendulum.

They are all consistent as they always have the numbers, then a dash, then more numbers. Basically if there is a dash in the movement number, and it's all numbers in the beginning with no letters like "A", it's a Hermle unit for sure. If there is an A before the number then it can still be a Hermle, but with the Seth Thomas name and numbering system.

Keininger mechanical clock movement identification

Kieninger Movement Availability

Kieninger mechanical clock movements are available usually with no problem. The 5 tube mechanical clock movements are no longer made but the rest is usually in stock.

Kieninger clock movements are sometimes a bit tricky to tell what the actual number is. They give part of the numbers but then it is up to you to use the chart to figure out the rest of it. This would depend on if the movement is chain driven or cable, the pendulum length and so on.

Urgos mechanical clock movement identification

Urgos Movement Availability

We only have floor, weight driven mechanical clock movements by Urgos at this time. The factory was purchased and that is all that they are making. Read More »

If the clock movement is spring driven, then email us the movement numbers and we will see what we can do with a Hermle mechanical clock movement that is close to what you have.

Seth Thomas mechanical clock movement identification

Seth Thomas Availability

The Seth Thomas name is on everything now a days. If someone says I have a Seth Thomas, that could mean a clock movement that takes a battery or a mechanical movement or anything really. Read More »

>Back in the old days, there was a company who sold many mechanical clock movements out of Plymouth Hollow, CT and so they changed the name of the town to Thomaston, CT after the company.

So now if the clock is very old and made in the USA with an ST marking in a diamond shape, then that is an original Seth Thomas and there would be no replacement movement for this. you're only option is to get this repaired.

If the Seth Thomas mechanical clock movement says made in Germany, then use our list to see what the real clock movement numbers are so you can price it out and order it. The thing is, the company did not produce any modern clock movements however there name is marked on them as their own. So if the clock says Seth Thomas but it was produced after around 1960, then it is made by someone else with the Seth Thomas name.

So if someone were to purchase a Seth Thomas clock as an original Seth Thomas, and it ends up being produced by a different company, is it really a Seth Thomas clock? Yes and no, it is a true Seth Thomas as it did come from who ever owned the rights to that name at that time, but the movement may not be actually produced by the Seth Thomas clock factory in Connecticut back in the day, as this is how we like to think of the ST name.

Jauch mechanical clock movement identification

Jauch Movement Availability

The Jauch clock company is no longer in business and nothing is available new. Since these are no longer made, we may be able to help with a Hermle mechanical clock movement retrofit instead. Read More »

If the movement says made in Germany and there is not much information on it but just numbers similar to the ones listed, and it's chain driven with a wood stick pendulum, then it is a Jauch mechanical clock movement that we can usually provide a retrofit for.

Mason and Sullivan mechanical clock movement identification

Mason and Sullivan Availability

Mason and Sullivan did not make any clock movements. They purchased so many mechanical clock movements from the manufacturers and were able to have their name put on their movements with their numbering system. Read More »

You would need to go to the Mason and Sullivan page and look up the M+S movement number, and then you will see the real movement number from the true manufacturer where you will be able to order.

Hermle Date Codes

Mechanical Clock Movement Identification by
Hermle Clock Logo from

Hermle date codes, what year it was made

Mechanical Clock Movement Identification by
Early movements prior to the year 1987 have just the stamp of the year on the back of the clock movement, 81 just means 1981. From 1987 on, they used letter codes instead of numbers to represent the year made. Such as the year 1987 is only marked with the letter A instead, and 1988 is the letter B.
A = 1987 B = 1988 C = 1989 D = 1990 E = 1991 F = 1992 G = 1993 H = 1994 G = 1995 H = 1996 I = 1997
J = 1998 K = 1999 L = 2000 M = 2001 N = 2002 O = 2003 P = 2004 Q = 2005 R = 2006 S = 2007 T = 2008
U = 2009 V = 2010 W = 2011 x = 2012 y = 2013 Z = 2014 AA = 2015 BB = 2016 CC = 2017 DD = 2018 EE = 2019

Hermle movement number starts with....