Expert: William J Perkins - 6/3/2010

Question
QUESTION: I have a Linden mantel clock with a bad mainspring. Where can I purchase a replacement? The name plate info is as follows:
77
Cuckoo Clock Mfg. Co. Inc.
NU(0)Jewels
Unadjusted
Made in West Germany
1051-020
15cm/178.28
Thank you

ANSWER: Your movement was made by Hermle and uses 3 mainspring, one is for the chime train, one for the time train and one for the strike train.  They are all different.  Which one is defective?  Regards WJP

---------- FOLLOW-UP ----------

QUESTION: WJP,
It is the center time train spring.

Answer
Model 1051 uses a #50 barrel for the time train.  All you would need do is to contact a clock materials house and tell them you need a number 50 Hermle barrel and mainspring.  One of the search engines would help you locate a materials house in your area.  It is important for you to locate one that sells to the public as well as the trade, examples; Merritt's Antiques, TimeSavers and Ronell Clocks.  Regards WJP