Especially the intense closeup of Sakura trying 
to change Light and Dark in Ep. 69.  I have a 
sequence-mate of this from just before she grits 
her teeth (as in your cel) in determination. The 
two from the Star Path Episode are also 
beautiful.  Congratulations on some very nice 
additions.

The Sakura with the lacy fan 
(http://131.191.73.94/sempei/cels/ccs/sakura/ccs80
.jpg) is very nice, but I believe it's a fancel 
rather than a hanken.  It's based on a CLAMP 
graphic that's in the Illustration Book #2.  In 
the part of the graphic that's off the right side 
of your cel, Eriol, also dressed in European-
style lacy costume, is busy kissing her hand.  My 
guess is that your cel was painted as part of a 
set, and that it originally came with Eriol in a 
separate but matching cel.