Abstract: A new outdoor advertising sign for displaying advertising letters in a secure manner. The inventive device includes a sign portion including a wooden back portion. The wooden back portion has a metal peripheral frame secured around an outer periphery thereof. The metal peripheral frame has incremental markings on opposed side members thereof. The wooden back portion has hook and loop surface disposed on a front surface thereof. A plurality of letters are provided with each having hook and loop fasteners disposed on a rear surface thereof for mating with the hook and loop surface of the sign portion.