Okay, how about I post a few images and tell me 
what your expert opinion is?

(Sorry if this seems like a lame excuse to 
display Ifurita cels, but I really am trying to 
learn something here. ~_~)

#5 - This is an example of a pretty detailed 
Ifurita cel.  If I used the detailed test, this 
should be from the original OVA.  If I used the 
hair color test, this should be from OVA 2.  
Final verdict?

(This image came from Anime Corner Store and is 
for educational purposes only.)

I REALLY WISHED THERE WERE BETTER EXAMPLES WHERE 
I GET STUMPED, BUT UNFORTUNATELY THESE WERE THE 
BEST I COULD FIND.  GOMEN!