Here are several pictures of original Dash Plaques that I took from some cars or have had passed
to me over the years. The following is what I know and have heard about what was behind the dash plaques.
The number on the dash plaque in no way relates to the production number of the vehicle or the 'Demmer' number assigned to the car. Basically the new owner of the car was left a small form, also pictured below, to fill out for the dash plaque. The dash plaque number was known as the 'Hurst' number and all that was is a list that Hurst compiled of registrations for the dash plaques it received.
Have heard the form was with the owners initial paperwork and also have heard it was just left in the glove box.
Not all cars got a dash plaque because if you didn't fill out the form and send it in, you didn't receive one.
The number on the dash plaque was just the number assigned to the plaques themselves as they were made and sent out. So, if by chance your car was somthing like the 100th one made but you were the 10th individual to actually send in for the dash plaque, your dash plaque had 'HO - 10 Built For' on it.
Special thanks to Ken Millington, Dennis Johnson and others.