Workshop Hints
Dating Bulle Clocks

By John Hubby

Commercial production began about 3rd qtr 1920. Production stopped in 1939 and did not resume until after the war, then stopped for good in 1954 following Bulle's death. A total of about 330,000 clocks were made, apparently all being sequentially numbered.   Following is a table of serial numbers interpreted from my graph which might be of help to you. I don't claim this to be completely accurate and would like to hear from anyone who has a clock that can be dated from an inscription or whatever, and I will add it to my data. Also, if anyone has any kind of documentary evidence or listing of serial numbers Vs dates I would really like to hear about it.

YEAR Serial Number
1920 1 - 2500
1922 8000+
1924 21000+
1926 47000+
1928 86000+
1930 120000+
1932 145000+
1934 189000+
1936 230000+
1938 270000+
1939 Production stopped at 300000(?)
1946(?) Production resumed
1948 310000+ (?)
1950 320000+ (?)
1952 326000+ (?)
1954 Production ceased, maybe 330000 (?)

Without factory or other documentation the above numbers need to be considered a best estimate and used with caution, especially the post war numbers.

John Hubby dba Pas-Times     400-Day Clock Specialist
P.O. Box 9543, The Woodlands, TX 77387-6543
AWI  BHI  NAWCC (Secretary, International 400-Day Clock Chapter #168)
E-Mail pastimes@juno.com

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