The robbery happened at the Republic Bank located along the 7300 block of Frankford Avenue shortly before 6:00 p.m.
Police say the man entered and presented the note to one of the tellers.
After receiving approximately $1,500, the man fled on foot and remains at large.
He is described as a white male, approximately 5'8 with a thin build. He was wearing a plaid shirt.
Anyone with information is asked to contact police.