Dorrin K Mace, Horologost

Dorrin K Mace, Horologost
The Clock Man in a pensive moment

Monday, November 11, 2013

Hermle Date Code

In 1988 Hermle movements changed from a 2 digit date code to an alphabetic code for the date.  You will find the date code by the movement number on the back plate of the clock.  Please refer to an earlier post for understanding all of the numbers stamped in the back plate of your Hermle Movment

Letter        Date of Manufacture
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

In 2014 the lettering sequence will start again with A


  1. Hi, just passing by to see something very interesting and gladly I've found it here. Thank you for your wonderful article it really helped me a lot. You can also visit my site if you have time.

  2. I have a hermle mantle clock with just the fhs logo and no other info. Who knows how old that is. I wish somebody understood the dating method. I found this clock in the garbage when I was a boy in the early 1970's, it says made in Germany.

    1. Send some photos to and I can help you date the piece

  3. how do I identify a clock by it's movement


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