Dates for Series J Dates
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A limited number of copies of the AMERICAN DIGEST OF BUSINESS MACHINES (1924) is available.  Use the link on the home page to find out how to get your copy.

Manufacture Dates For Series J Ten Key Adding Machines

Year Serial Start
1954 J1001
1955 J12600
1956 J42500
1957 J60259
1958 J81100
1959 J102200
1960 J132800
1961 + Unavailable
Courtesy of the Charles Babbage Institute, University of Minnesota, Minneapolis