GT Hubs info needed

[animal]

Looking for a set but am aware there r 1st and 2nd generation ! I have no idea of dates either ? Seen some with diff stickers . Some example pics would be nice to 

[pkradman]

i have some 1st gen ones forsale , hollow axels , could do with some new nuts as u can see ..    £45 + post  "pete quad" has the decs for these ...pm me if ya interested