1970 Three Hundred convertible fender tag

You are trying to get more out of a fender tag than was actually put into it. Consider the following broadcast sheet:


It clearly states N88 "Auto Sp Control".

Does the fender tag echo that?


No, it doesn't.

To understand why this is so, you have to know the specific plant's logic for stamping the fender tag. And we don't.

So again, the fender tag isn't faulty. Its contents depend on the specific plant's needs.