This a vintage thin plastic sign that is advertising a Fish Sandwich Combo! The prices in bottom right corner appear to be maybe stickers that could probably come off. It measures 15 1/2" x 10 1/2" in good condition with some slight scratches and wear. I have no idea what restaurant or diner it came from, I am in the Dayton Ohio area, it came probably from around here somewhere, guessing 90s, not sure. Buyer pays $8 shipping.