Quote Originally Posted by lordgandalf View Post
Books maybey ?
from what I could find there's no "normal" way to get fortune IV or efficiency IV. I admit that I only tried in single player but while using creative there was no way to get these using vanilla 1.5.2 so I suspect you're either using a pre-built which kind of give you IV efficiency or any other mod that changes the rank. I have no clue how you managed to get the item data value but when I spawned it in singleplayer it gave me that item only then with level III enchantment overall I have to say it's a very weird case.