How can you tell if an item is duped?

[whiteninja]

- If the guy you got it from is using a SJS, TJS, Double Cannon, Heaven's Punisher, Psycho Wand, NUG 2k, Guld Milla, Dancing Hitogata it is almost assuredly a dupe
- If the guy you got if from is level 200 it is almost assuredly a dupe

Almost... very important word... yeah, there are alot of players with legit level 200 characters wielding their legit NUG 2k's, but there are alot more illigit ones. Hence, "almost." If you know the person though, then you can be more at ease trading with him. Though if it's a level 200 guy using an uber rare that you've never met, and he offers it too you for some trade that seems to be too good to be true... then it is.

Not to say that all people who use those items and have level 200's are illegit, it's just that the majority are.