This set of novelty glasses has a comically-oversized false nose along with a thick fake mustache and bushy eyebrows. These glasses have 3 charges and regain 1 charge each dawn. While wearing the glasses you can expend 1 charge to cast the spell __disguise self_ (save DC 14).
However, you cannot mask the glasses themselves using __disguise self_ in this way—no matter how your disguise looks, it includes the novelty glasses.
If you expend the last charge, roll a d20. On a result of 5 or less, the perfect disguise is glued to your face (as sovereign glue ) and it becomes a mundane item.