1971 Florida era license plate

Its not so much only being able to use the White background, its that you need to use the one from that year. Florida used to issue new plates each year but which spanned 2 years, and changed color for quick identification of out of date registrations. I have a 69 plate which is White on Green. They allow you to register your antique car with the year that relates to what year your car is only if you want rather than the standard current Florida plate or the plethora of stupid plates for any cause, school, branch or whatever.