Vintage Porcelain Appaloosa Horse Figurine, Breyer or Hagen ?

This is a delicate and undamaged Appaloosa horse figurine that looks like either a Hagen Renaker or Breyer figurine, but we have been unable to identify it. It stands a bit less than three inches tall and has no cracks, chips, repairs, or crazing. It has a C in a circle copyright mark under the glaze on the bottom side, but is otherwise unmarked.