Bard's mask of Disguise

Attached to a pair of over-sized black-rimmed spectacles are a bulbous nose and large, black mustache.  

This mask could help any adventurer sneak about town disguised.  

Could.  

Otherwise mundane, this mask allows the wearer to appear as someone else ... of exactly their same size, race, and gender ... should everyone else fail a DC 7 Perception check.  
But should someone fail that check, boy-howdy,  think of the fun that could be had. 

Note: Wearers of the mask should be careful about the status of any organization willing to have them as a member while wearing this mask ... 

Notes: Deception, Headwear, Eyewear