Sign Gold 23.5KT Gold has a more rich traditional appearance it's a more “yellow” colored gold. Our 23.5KT Gold can be Reverse Cut for second-surface applications, such as windows, doors and glass displays. Quick 23.5KT SignGold is guaranteed for 10 years and has an expected outdoor life of 10-14 years as long as all technical information is followed. *This is a NON-Printable Product.