This is a vintage Hallmark Keepsake Christmas ornament, Billboard Bunny. The bunny rabbit is white, wearing a red sandwich board that reads "Bah Hum Bug" on the front and "Ban Fruit Cake" on the back. The ornament is 2 3/8" tall. It is in new condition, still in the original box. It is from 1990.
Hallmark Keepsake Ornament Billboard Bunny New In Box