I recently bid on and won this framed cel on eBay:

http://cgi.ebay.com/ws/eBayISAPI.dll?
ViewItem&item=3243528279&category=11119&rd=1

It arrived today, and when I compared it to the 
DVD, I don't think it is an actual production 
cel.  First, there is zero line fading, which 
doesn't match with any of my other SM cels.  More 
importantly, even though the figure seems to 
match pretty well, the shading isn't exactly the 
same.  I attached a picture of the cel with the 
screen shot (sorry about the quality - I just 
took a picture of my TV screen with my camera).

The listing says this is an "Original".  Does 
that not necessarily mean it was used for 
production?  The seller had 100% positive 
feedback, so is it possible they thought it was a 
production cel?

Just throwing this out there for ideas.