Flint Serial Numbers
 Year Model

Note: Model year changes approximately August 1, each year.

 1924 H-40 100 -2404
 1924 E-55 100-8324
 1925 H-40 2405 -7699
 1925 E-55 8325 - 16587
 1926 H-40 12477 - 15209
1926 E-55 16588 - 18930
 1926 B-60 15210 - 18775
 1926 E-80  18931 - 20102
 1926 Z-18 100 - 1911

 1927

 60
18776 to end
 1927 80 20103 to end
 1927 Z-18 1912 to end