This bowl has a wonderful patina, beautiful paint, and a very appealing katsina image. It has been said that Thomas Kean encouraged the Hopi to make wares with katsina images because they appealed to the Anglo buyers who came with the railroads. A more complete description can be found about this topic along with a very similar katsina image on a Hopi pitcher from the late 19th century:  http://firstpeoplepots.com/1997-09/#/

These two pots were probably made by the same artist. Of course, Hopi wares were generally unsigned until after World War II.