Model A front fender

[1EarlyA]

I have a front fender that I am pretty certain is for a Model A. I have done some looking around to confirm this and some people have said that there were 2 different styles of fender used in the later cars(30/31). Supposedly this has something to do with the shape of the front of the fender.


I have always gotten reliable info here so I thought I would ask:
Is what I have been told correct?
If so, what is the specific difference that makes one more hard to come by than the others?
What fender do I have?


Thanks in advance.