Heubach is a German company that produced highly collectible bisque and ceramic items from the mid 1900's until the early 1900's. They were known primarily for producing bisque doll heads but also produced a line of bisque figurines. Piano babies were the most popular of these figurines.
You need to be alert to these highly collectible figures. Look for the markings on the bottom of the figures. The impressed mark looks like a rising sun. They are also sometimes marked Germany. As always condition is very important. Make sure that they are free of the three C's; chips, cracks and crazing. Don't be afraid to step up on excellent condition figures. Babies like the one pictured can sell for several hundred dollars.