it's got to be the hanken of Priss with Syvlie 
from Midnight Rambler BGCrisis OVAs. The second 
runner up would be the CU of Vision in Yann's 
gallery. Would love to buy it but since he does 
not take offers, there is no point. The perfect 
shot for either does not exist commercially, 
since it all likelihood the BGC OVA hankens were 
destroyed years ago. AnimEigo has a few hankens 
but they neither display them or anyone else to 
enjoy/admire and they refuse to sell them.