Stealing Girdle of Stone Giant Strength from Duke Eltan
Is it possible ? According to the wiki it is. From what I have experienced so far (that is to say hundreds of tries with 320 in pick-pocketing with potions otherwise I have a 150 base) I have had many "The target has no items that can be stolen by a cut purse of your skill." and from time to time a "Pick pocket failed" message so I'd say that it is possible, but are the chances though ? Is there a way to know for sure if it can be stolen ?