The kiddies are gassing over in the Anime Chaos 
forums, about whether this is really a hanken cel 
or not (and they seem to be convincing themselves 
that it is not):

http://cgi.ebay.com/ws/eBayISAPI.dll?
ViewItem&item=3218170192&category=1345

I happen to know for a certainty that when this 
actual cel sold on YJP (to someone other than 
myself, I didn't even bid on it), it was 
described as a hanken cel.  So, either it's 
really a hanken cel, or the seller on YJP was 
fibbing...

I don't know for certain myself, although I don't 
recognize it from any scenes in the show, so I'm 
inclined to believe the original YJP seller.

Anyone else know one way or the other?