Another wrench in the VON prefix theory, lets pick on a 1970 Dodge dealer;

IF the VON letter prefix had a dealer code written in & say it was 00 prefix then;

Chrysler would have to supply order form pads for;

The Dodge Dart

The Dodge Challenger

The Dodge Charger

The Dodge Polara

The Dodge Trucks

Etc.

All starting with 00

Which has not happened that I have ever seen by looking at full sales records from dealerships so far.