[rotorwrench]

It's interesting what part numbers were published in the "green bible" otherwise know as the Ford Chassis Parts and Accessories Catalogue dated November 1950. This included all available parts for Ford vehicles manufactured from 1928 through 1948. A lot of available parts for model A are the latest interchangeable part and many have a B prefix instead of the A prefix. A lot of these parts were used up through 1948 but still carried the old prefix.

Ford's part numbering system made sense to them for the most part so they weren't concerned about what the public at large thought about it. Folks went to their Ford dealer to get manufacture specific parts. Things have changed a lot over the years in this respect and it's mostly due to the restoration and maintenance of these old vehicles. Long after Ford quit producing obsolete car parts, there are still some NOS parts to be found out there so folks still need to know what they are looking for.