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We just inherited a Seth Thomas Mantel Clock after my father-in-law's passing. He religiously wound the clock  and it kept very good time. Unfortunately we don't know how to wind it, which of the 2 receptacles to use (what is the other one for) or how many turns. We don't want to damage it. On it are the following details. Lyndon-2W, model no E531-000. 8 Day Keywound clock with A-200 Series Strike movement. On the movement it says that it was manufactured in Germany for Seth Thomas clock and has the numbers A205-000, 5113 on it.  Also stamped on the direction page is 6003. I have attached 2 pictures.  
Thank you for your help.

John, the movement you have is what I call a modern production movement and was manufactured by Hermle.  As with many large resellers, Hermle will put their name and number on the movements.  The movement is a time and strike with no chimes.  That means the clock strikes out the hour and strikes once on the half hour.  The right winding arbor is for the time and the left one is for the strike.  I am pretty sure that both are wound in a clockwise direction.  Make sure the key you are using fits over the winding a arbor without any binding and is not too loose.  It should not have more that about 5 degrees of play.  If it is too loose it is the wrong key and can slip, causing damage to the clock or personal injury.  When winding, wind until you feel an definite increased resistance.  You cannot overwind a clock unless you apply undue strength, bending the key or snapping something in the clock.  I hope this helps.

John Newman
Vintage Emperor Clock Consultant
Old Prattvillage
Prattville, Alabama

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John Newman


As I am not a certified appraiser I do not give values of clocks over the Internet. There is very little published information on what I consider to be the value of "modern production clocks". However, considerations are what the clock originally sold for, the condition of the case and movement, and particularly the area in which you live, the demand and the economy. ALSO, WATCHES ARE NOT MY FIELD. However, I can advise the clock owner on proper maintenance of a clock to keep it running, small corrections and adjustments and how to move a clock without damaging it. I can also advise on obtaining parts for clocks. As clock case model label numbers are difficult to relate to the movements, it is helpful if you can give me the information usually found on the movements themselves. Modern clock movements usually have the information on the back plate of the movement. I have been a clockmaker for about 40 years and was plant engineer in the mid 90's and later operations and engineering consultant at Emperor Clock Company in Fairhope, Alabama. I now have my own clock shop in Prattville, Alabama.


One of my greatest accomplishments was traveling to China to assist a clock factory in building clocks to the standards which we required at Emperor. With the proper specifications and quality control, some beautiful clock cases were built. The factory people from the wood carvers to the plant manager were very congenial, friendly and I left a lot of wonderful friends when I returned from my trips.

NAWCC (National Association of Watch and Clock Collectors) 30 years Prattville, Alabama Chamber of Commerce

Horological Times, a publication of the American Watch and Clockmakers Instute. Collaberated column author, with Photos and ideas for clock movement conversion article.

Associate of Science Mechanical Engineering Technology Emperor Introductory Clock Repair (Eventually taught a portion of the class after becoming employee)

Awards and Honors
Small Business of the Quarter (Prattville, Alabama) Leadership Class of 2009 (Autauga County, Alabama)

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