QUOTE(ws91420 @ Aug 18 2011, 02:45 PM)
What are the between early and late? What is the year break for the late?
To answer your first question:
Q. "What are the between early and late?"
A On time.
I do not know when the break occurs. Porsche shows one part number for all years. The early mirrors were smaller and have a different sharper radius on the stand post top. I have seen very few early mirrors.
Unless you are highly concerned (AKA coucours Weenie) about originality the latre mirrors are better as they are larger.