Here is this week’s JCPenney ad released on September 11, 2014. The ad is valid through September 23, 2014. This is the JCPenney Billion Dollar Jewelry sale ad. They are having a great doorbuster sales on necklaces, bracelets, earrings, and more. JCPenny is a department store selling clothing for women, men, children, teens, home goods and accessories.