Need help re: 1857 DDO FE cent.....

DoubleEagle59

I've been on Rick Snow's website and I have a question regarding the 1857 double die obverse FE cent.

When the 'eye' of the eagle is doubled, (alongwith other doubling of the obverse) is this diagnostic for only one Snow variety, or are there others?

RBinTex

These are all S-3 (i.e FS-002, 8-O-I):

ldhair

There are several. S-3, S-4, S-10, S-17 and probably more.
Do you have an image?