Blog
400 day clock
anniversary
anniversary clock
antique clock movement
chiming clock movement
Chiming Quartz Movements
clock
Clock Bushings
Clock chime block
clock cleaning
Clock cleaning kits
clock cleaning solution
clock dial
clock dials
clock hands
clock insert
clock kits
clock movement
clock movement kits
clock movements
Clock Oil
clock oiling
Clock Pendulum
Clock Pendulum Parts
Clock Pendulums
clock repair
clock repair parts
clock repair service
clock repair tools
clock suspension spring
Clock Tools
clock troubleshooting
Clock Weights
clockworks
clockworks.com
cuckoo clock movement
cuckoo clock movements
cuckoo clock parts
cuckoo clock repair
Cuckoo Clocks
electric clock motor
grandfather clock
Hermle
Hermle 241 Series
Seiko quartz movement
How Old? Hermle Movement Date Codes
Dating a Hermle clock movement by decoding the
date code stamp helps determine when the movement was made and whether it’s time for a replacement.
After locating the Hermle movement date code, use the chart below to determine its age.
If the movement is **over 20 years old**, it’s time to replace it. Only movements **under 20 years old** should be considered for repair.
Date Code System Change
Before 1987, Hermle movements were stamped with the year of production (e.g., “81” represents 1981).
Starting in 1988, letter codes replaced numbers—e.g., “A” for 1988, “B” for 1989, “C” for 1990, and so on.
| 76 = 1976 | 77 = 1977 | 78 = 1978 | 79 = 1979 | 80 = 1980 | 81 = 1981 | 82 = 1982 | 83 = 1983 | 84 = 1984 | 85 = 1985 | 86 = 1986 |
| 87 = 1987 | A = 1988 | B = 1989 | C = 1990 | D = 1991 | E = 1992 | F = 1993 | G = 1994 | H = 1995 | I = 1996 | J = 1997 |
| K = 1998 | L = 1999 | M = 2000 | N = 2001 | O = 2002 | P = 2003 | Q = 2004 | R = 2005 | S = 2006 | T = 2007 | U = 2008 |
| V = 2009 | W = 2010 | X = 2011 | Y = 2012 | Z = 2013 | AA = 2014 | AB = 2015 | AC = 2016 | AD = 2017 | AE = 2018 | AF = 2019 |
| AG = 2020 | AH = 2021 | AI = 2022 | AJ = 2023 | AK = 2024 | AL = 2025 |
Related Posts
Hermle Clock Movement Identification
Identifying a Hermle clock movement starts by locating the numbers on the back plate. These numbers, such as 451-050 94
We purchased a 1171-850 it came with 3 weights 2 being 9.6 pounds and 1 at 11.6 pounds. Are these the correct weights? According to the web they are post world war weights and if they are correct what is the correct placement for them? Currently we have the heaviest 1 on the right side . Thx for taking the time to answer .
They are fine for that unit. Put the heaviest one on your right as your facing the clock
James Stoudenmire
40yr Clockmaker
Author of Clockworks.com
Hello, I just purchased a 1981 151-070 from an antique store. I believe it is missing the decorative brass top figure. Does anyone know what this might look like and anywhere I could find a replacement? Thank you!
Do not have the case part
James Stoudenmire
40yr Clockmaker
Author of Clockworks.com
The second hand for 1161-850 will fit that, this link
https://www.clockworks.com/product/second-hand-for-grandfather-clocks
James Stoudenmire
40yr Clockmaker
Author of Clockworks.com
This is the old style leader for that
https://www.clockworks.com/product/hermle-clock-pendulum-leader-4-3-8-long
This is the new style leader
https://www.clockworks.com/product/hermle-clock-pendulum-leader-5-1-2-inch
Suspension spring is A3 if the bob is 6 1/2 inches or wider
https://www.clockworks.com/product/clock-pendulum-suspension-springs-assortment
Suspension spring A2 if the bob is less than 6 1/2 wide
https://www.clockworks.com/product/clock-pendulum-suspension-springs-assortment
Top hook for the wood stick pendulum if you need it, it is the 3/4 inch wide one
https://www.clockworks.com/product/hermle-clock-movement-top-hook
James Stoudenmire
40yr Clockmaker
Author of Clockworks.com
I have a 1975 Emperor Grandmother clock called the Newport. In the rear, it says Jauch something with two sets of numbers 77 475 and 330020. The clock was bought in 1975. Can it be repaired? Is it better to replace it? and if replaced what will fit in its place?
That is an obsolete movement by Jauch clock company. No longer made so we have a conversion. Please read all about the conversion and order at this link
https://www.clockworks.com/product/jauch-pl77-clock-movement-kit
James Stoudenmire
40yr Clockmaker
Author of Clockworks.com
Clock is Franz Hermle, Made in West Germany, stamped with year A, 1988, code, I am guessing the model code is 1051-020. The clock has been kept on Silent for quite some time as we have a Grandfather clock in the same room. Today, my wife noticed the clock not running, guessing the spring had wound down, she opened the front door and tried to wind it only to see that the spring was wound. She opened the back and gave the pendulum a touch to start it. It operated a few seconds and came slowly to a stop. She gave it another touch and the pendulum felt like it was blocked from swinging. The pendulum was touched again and it felt as though there was a “soft” resistance but then the pendulum moved and went back to swinging again. This stoppage and soft touch was repeated again a couple of times and we stopped. At the front of the clock, the Chime lever was moved from silent to the first position, the time was set and the clock was restarted. At the top of the clock, on the hour, the clock chimed. After about 20 minutest, the clock continues to keep time and the chime is working.
Q. What might have been hanging up the pendulum and stopping the swinging? Could it have anything to do with the Chime being in Silent and then when the Chime lever was moved from Silent to the first notch, the resistance/obstacle to the pendulum was removed??
Thank you for any information.
This clock has turned into a family heirloom, being gifted to us by wife’s parents around 1988 or 89. This clock has been in service since we received it, never serviced, always ticking away!
These are 25 year movements, 30 at best. Time for the new one. This link
https://www.clockworks.com/product/1051-020-clock-movement-by-hermle
James Stoudenmire
40yr Clockmaker
Author of Clockworks.com
Thanks for the reply and info. Don’t know if we will pursue a new movement – currently the clock is back working – we will just see what happens. Thanks again.
I picked up a Hermle clock I know nothing about at a flea market. It has the FHS stamp with no date code on the back. Any idea of age?
Sounds over 45 years old.
James Stoudenmire
40yr Clockmaker
Author of Clockworks.com
What year was the battery clock Hermle quartz 1217 made. Its from my childhood I was born in 57. A box shelf clock with brass plate front stamped Linden.
That one is no longer made. It can be 20 or 30 years old is my guess
James Stoudenmire
40yr Clockmaker
Author of Clockworks.com
I am looking at purchasing a Franz Hermle Zaanse clock, but it has no weights. Am trying to find out what size replacement weights I would need and where to purchase them. Stamped on the left side of the movement is 75 with Franz Hermle below it and where it was made (West Germany) “Unadjusted” with the # 261-either 060A or 080A. On the right side of the movement is stamped 31 cm over 125.780. What do these numbers mean and will they help determine what size weights are needed?
Two weights at 4.3lbs and 43mm wide, from this link
https://www.clockworks.com/product/polished-clock-weight
James Stoudenmire
40yr Clockmaker
Author of Clockworks.com
Hi there I’ve got a hermle carriage clock (i think) I can’t identify – I think it’s a 1987 one, as there is an 87 on the back, further down it notes w.germany etc etc and then 987 as the last 3 numbers with no further info. Any chance it could be identified?
Does not sound Hermle. Got a pic ?
James Stoudenmire
40yr Clockmaker
Author of Clockworks.com
Hello, I have an all brass Ridgeway with a 1981 Hermle 557-080 movement. It has one bell and 2 hammers on the right side as you look at the back. It also has a night and day movements section at the top with numbers that are not in order
That one is no longer made or available. Restoration only. Want to send the movement into us for inspection >?
James Stoudenmire
40yr Clockmaker
Author of Clockworks.com
I have a Hermle movement, 451-050 that says Made in USA. Are these the same as the German made movements?
Yes, there was a short time they used the factory here in US, now back in Germany these days
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
I work at a Hope Hospice thrift store, a non-profit business. We received a Franz Hermle clock. I am trying to date and value it before I get into repairing it. I would appreciate it if you can help. [email protected]
What are the numbers off of the back plate of the clock movement itself? If it is hard to get to, usually you can stick a cell phone up behind the movement and get a picture of the numbers. Or through the side access panel if there is one.
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
HI.
I HAVE A MANTEL CLOCK WITH F H S ON THE BACK ALSO STAMPED CLOCK WITH THE TIME 7.23. NO IDEA. INFO THANKS.
Franz Hermle and Son
Need a pic to ID
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
what it means letter “A” in the number corde 340-020A of Franz hermle mantel clock
what year is this clock was make?
Unsure of movement type. However, My clock is a Sears Roebuck TRADITION mantle clock made in Germany. No paper tags. No movement name seen from back door (movement is still in case).
The only stamp I see is “PL12 cm.” What does that mean?
Any idea date & movement type?
where I can get a Bob hanger & nut?
Jauch movement of Germany from 1960 – 1980’s
Parts need to be custom made as they are obsolete. There is no movement replacement either. It can be sent to us for restoration and figure out the pendulum if need be
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
I have a Franz Hermle 1171-850 S, code U, 114cm, 60.000. Can you send me the instruction/installation paperwork? I seem to have lost mine during a recent move.
Thank you for your interest, here are the instructions for the installation of your new cable driven clock movement. Please follow these instructions, and if you get stuck after using these instructions still, just contact us and we will work through whatever your stuck on.
Here is the link
https://www.clockworks.com/mechanical-cable-driven-movement-only-instructions.html
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
Hello, I have a Hermle clock with the code of 151-070 Letter F indicating made in 1993. I have not be been able to find the movement number 151-070. I appreciate your assistance.
Does yours have two bells one the back of it or one does it only have one hammer that strikes a coiled gong?
Does that unit have a calendar days of the month feature on the clock:?
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
Thank you for responding. My clock has 2 hammers that strike the bell. No calendar feature.
Need the CM number that is under the 151-070 number please
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
21cm/148 Thanks
Please order the 141-070 21cm from this link
https://www.clockworks.com/product/new-141-070-clock-movement-by-hermle
Now the clock will have a 14 day run time on a full wind up, instead of only 8. All stuff fits the same, it is the same movement just with a longer mainspring inside.
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
I appreciate your help. Thank you very much.
I HAVE JUST PURCHASED A VINTAGE FHS FRANZ HERMLE GERMANY MANTEL CLOCK WITH 130-677 MOVEMENT. I WOULD LIKE TO KNOW WHAT THE DATE OF IT IS PLEASE. THERE ARE NO STAMPS INSIDE. THANK YOU IN ADVANCE.
See the letter or number code that is above the movement number on the back plate, then use the chart on this very same web page
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
I have a Hermle 791-082 Skeleton clock. On the back it has 16.5 pendulum length. The clock has a 41mm pendulum length and keeps perfect time. I the same clock with the same numbers however has a shorter pendulum. I would like to change the train wheels to make both clocks work with a longer pendulum. I have counted the teeth and the pinions.Where can I get replacement parts?
The 16.5 is the shortest that one comes in, thus no wheels for anything shorter
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
Hi James, thank you for taking the time to reply to me. I made a mistake in my original message to you, I said the the pendulum size was 41mm when it should have been 41cm. I am hoping to convert a movement that has a 16.5cm pendulum to accommodate a longer pendulum. I am hoping to achieve this by changing the train wheels. In the movement that I have with the longer pendulum (41cm) the wheel count is as follows: the minute wheel has 76 teeth, the third wheel has 66 teeth with 8 on the pinion the escape wheel has 39 teeth with 8 on the pinion.
I would appreciate any help or advice that you can give me.
Regards
Andrew Scobie
clockmaker (retired)
This one only comes in 16.5cm that I know of. The gears are specific to that movement, other Hermle movements gears will not fit to make an alternate CM
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
Hi, I have just purchased a lovely long case clock, on the back of the movement it has an X over Franz Hermle, and numbers 1151 053 H.
Can you please date it for me?
Made in 2011
We offer the movement here if needed
https://www.clockworks.com/product/new-1151-053-clock-movement-by-hermle
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
Rotating pendulum German clock battery operated has a 3 way switch marked O, BA, W any idea what they mean?
Off
BimBam
Ave Maria
Westminster
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
My 2006 1050-020 has run five minutes slow since the once new movement was installed. No adjustment by me. a novice, has corrected this problem. I have seen a post about removing one plug, but it does not appear that I have any plugs. Your thoughts? Thank you.
Timing a balance clock movement
Balance Clock Movement Timing is done fairly easy. There are three types of clock balance movement styles post 1950. This section is for those balance units that do not have a platform escapement.
The platform escapement can be read about in another section. These notes are only for the larger balance wheel in the top center of the clock movement.
For example, movements in the Urgos 6/ series and many of the Hermle clock movements. Hermle movements such as 340-020 and 350-020. Out of these, two styles, the old style and then the new style.
Use of the old style was all through the 70’s and 80’s and 90’s. Around this time there was a switch to the new style on the Hermle units. By this time the Urgos units were out of production.
The old style
The old style is one with a round spring that goes up and down (Vertical). It goes in a circle around the center arbor of the balance wheel. In this style there is a slide arm with a tiny weight on the balance wheel itself. There is a + and – on the wheel. To speed up time go towards the plus sign.
However this style is not always easy to regulate and can be very hard to get it perfect. The factory has special devices to make it perfect. However it’s not that easy on the customer end with this style balance. For this reason it has been improved upon during future manufacturing.
If the old style balance then the clock movement has some age to it. If this is the situation it is just best to replace the unit with the new one. Clockworks offers the movement brand new with the new style balance for less than the cost of a cleaning.
The clock movement has lasted 25 years or more. In theory the new unit should last more than this with the improved aspects.
The new style
The non pendulum units offered on this page all have the new and improved balance assemblies. Despite the change on the balance, these units are a direct fit and will install in the clock case the exact same way as the old unit.
If the numbers match from the old unit to the numbers offered on this page, than the movement will be the exact same. It will be the same as it is now but brand new and with the improved balance.
The improved upon balance units have a different kind of hairspring (Horizontal). It will also have a screw to regulate it rather than a slider arm. The regulator screw is on the back of the movement near the balance.
There is a + and – sign next to it meaning fast or slow. If the clock needs to be faster to keep time then the screw would be turned to the plus and opposite for slowing time.
The factory times the balance movement before the new movement ships. The movement has a slider arm on the threaded portion of the timing adjustment screw. This arm pulls or pushes the horizontal hair spring and makes the clock run faster or slower.
When the movement leaves the factory this arm is in the center of that threaded rod and is timed while the arm is at that location. During shipping it is possible for this arm to jump out of its center position and, in turn, make the timing out of whack.
The solution to this is to first just lift that timing arm with fingers and move it to the center of the threads again. This is where timing begins.
After it is in the center of the threads it will be pretty close in timing and only will need fine adjustment with the screw, moving it too the plus sign for faster, minus sign for slower.
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
Hello, I am attempting to figure out the age and authenticity of a clock I purchased. It is a bell clock on a wheel from a WW2 liberty class ship. On the back of the mechanics of the device, from what I can decipher, it has the Hermle logo, NO (O) Jewels, UNADJUSTED, Made in Germany, 577-078SG. Can you please assist?
Thank you for your time!
That is post 1950 made by Hermle and is the same movement as 132-071 this link
https://www.clockworks.com/product/new-132-071-ships-bell-clock-movement
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
I have a cone shape hermle clock with 791-081 and it 16.5 cm /167.700 on back. Can you tell me date and value. It is running good. Thank you
Do not know the value but we sell the movement at this link for 289
https://www.clockworks.com/product/791-081-hermle-clock-movement
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
I recently inherited a clock from my wife’s deceased mother, so far I’ve be able to get it running consistently and it now chimes 1/4 & hours correctly. It appears that at some point it was laid back so the movement had shifted enough to cause issues. (Hopefully) I’ve resolved that now. I’m interested in finding out the date of it, it’s not likely that the movement’s been replaced but I really don’t know the history and my wife doesn’t remember when her late father purchased it. The #’s stamped on the movement are; UW32-319H-01. Any help is greatly appreciated, Thanks! Mark.
Hi,
That one is 30 years or less old. It is still made today. If in need please order the 32319 from this link
https://www.clockworks.com/product/uw32319-urgos-clock-movement
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
We sell the movement new for $225, this link
https://www.clockworks.com/product/new-131-081-clock-movement-by-hermle
Not sure of the value with the case.
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
Harmle 341-020 date code 112? What year is this?
Never seen a date code like that one. Best to recheck the movement for the code
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
I have a FHS mantel clock that has 151-070 then 11cm/200.8, I’m looking for a year, maybe 1970 and what those 2nd set of numbers are in a fraction like model. It’s missing a pendulum which I need
Please order a brass rod pendulum for an 11cm Hermle movement from this link
https://www.clockworks.com/product/hermle-brass-rod-clock-pendulum
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
Hello good sirs. I have a FHS clock that has a ink stamp on the back of the rear door reading 258W/8K. I believe this signifies that this is a model 258W clock and the 8K is some date code I imagine. Can anyone please help clarify this code for me? Thank you!
The date codes are part of the numbers on the back plate of the movement itself. Not the stickers on the clock case or the paperwork.
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
What does AG or AH, mean?
Hi James,
Hope you can give me some information on my Seth Thomas mantle clock.. It has a Seth Thomas wind up movement with a Westminster chime. The clock keeps perfect time. It will chime on the quarter, half, three quarter, and hour. It will chime on the hour, but will only strike the hours of 12, 2, 4, 6, 8, & 10. It will not strike the count of other hours. Need some help.
Thank you,
Steve
Tough to help in a blog. Want to do a zoom? See this link
https://www.clockworks.com/product/conference-with-a-clock-repair-specialist
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
James,
I would like to do a zoom today. What would be a good time for you?
I have what I believe is a Hermle clock movement that was made for Mason & Sullivan clock kits. The number stamped on the back of the movement is 3339x. The movement was dated 1984 and is no longer working. I would like to replace the movement, but need to know which hermle movement is correct. I found two movement, 131-080 and 131-081 18cm. Which of the two movements will replace the 3339x movement. Would appreciate any information that you can provide
Thank you,
Steve.
Please measure the shaft that the hands go onto, from the front plate of the movement itself and all the way out to the very end of the minute hand nut threads. This measurement will either be 32.3mm and if so get the 131-080, if it is 27mm get the 131-081
https://www.clockworks.com/product/new-131-080-clock-movement-by-hermle
https://www.clockworks.com/product/new-131-081-clock-movement-by-hermle
https://www.clockworks.com/clock-movement/mason-sullivan-clock-movement.html
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
Thank you for the information. Just ordered the 131-080 movement.
Thank you for the order
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com
How much is my clock worth