The WONDER HORSECollierville, Tennessee Spring horses are among the most modern class of toy horses. The oldest spring horses appear to be made by Wonder Products Company of Collierville, TN. The company manufactured wooden rocking horses in the 1940's. Up for bid today is the original Wonder Horse in the original Condition. It stands 28 inches high, is 34 inches long at the base and it is 19 inches wide. Please feel free to e-mail me with any questions.