Years
1920
1922
1924
1926
1928
1930
1932
1934
1936
1938
1939
1946
1948
1950
1952
1954
Serial Numbers
1 - 2,500
8,000+
21,000+
47,000+
86,000+
120,000+
145,000+
189,000+
230,000+
270,000+
Production stopped at 300,000(?)
Production resumed(?)
310,000+ (?)
320,000+ (?)
326,000+ (?)
Production ceased, maybe at 330,000
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. Without factory or other documentation the above numbers need to be considered a best estimate and used with caution, especially the post war numbers.
Source: 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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