Otto Art

African art by Otto. does any one know the value of this Art. This was given to me by teacher. It use to hang in the school I use to work at. This was a beautiful art given to me my friend Mrs. Smith. I really thank her very much. When I google about the artist I saw that he is an African American artist who lives in Brooklyn New York. He traveled to Africa and painted many different faces that he saw. I saw a painting of African boy and it was beautiful. I am so lucky to have this.