It was taken on Thursday at a Dunkin Donuts on Macdade Boulevard.
Police say the man entered the store, changed his clothes in the bathroom and purchased a plastic bag.
Minutes later, authorities say the man robbed the Sovereign Bank about a block away, at gunpoint.
Investigators say he used one of those bags to conceal the gun during the hold up.
Anyone who can help identify this suspect is asked to call Ridley Township police.