The book “L.E. Alley, Father of West Virginia Swirls “ says L. E. Smith copies are usually clear without a hint of tint color as opposed to Alley and generally Alley molds show more detail and the toes on the Alley sparrow have a sharp angle and the Smith bird has flatter toes.  Some Alley sparrows have a taller and steeper angled tail.  The wings are different and some Alleys bend their beak nearer the ground.  Hope this helps with ID.