I have yet to buy any cels with obvious holes in 
them, but I do have a number of cels with obvious 
missing layers, like the following:



Aiko



The Beast (and a lot of it too, as this is an E 
layer cel)



Touya (not that obvious, but I miss him ;_; 
Shoule be another profile layer behind Aki)



And last but not least, Gene's gun (not the 
caster, so I don't care that much)