HD VIN 1905-1969

For model years 1905-69 engine numbers represented the vehicle identification number (=VIN). There are no VIN numbers whatsoever stamped onto the frame. These VIN are easy to decode and self explanatory. The first two digits show the model year, the following 1, 2 or 3 letters represent the model and the final four or five numbers represent sequential production number. Between 1960 - 69 the production number portion was also coded. For even years, the first digit of the production number was even and for odd years this number was odd — This peculiarity makes it harder for forgers to get it right.

① = model year

② = type

③ = serial number