1. The gross receipts from any sparring, boxing or wrestling match or exhibition conducted under the supervision or the control of the New York state national guard or naval militia where all of the contestants are members of the active militia shall not be subject to the tax imposed by this article.

2. The gross receipts from any such match or exhibition where the contestants are all amateurs, sponsored by or under the supervision of any university, college, school or other institution of learning, recognized by the regents of the state of New York shall not be subject to the tax imposed by this article.

3. The gross receipts from any such matches or exhibitions where the contestants are all amateurs sponsored by or under the supervision of the U. S. Amateur Boxing Federation or its local affiliates or the American Olympic Association shall not be subject to the tax imposed by this article.

4. For the purpose of this section, an amateur is deemed to mean a person who engages in boxing, sparring or wrestling matches and exhibitions where no cash prizes are awarded to participants, and where the prize competed for shall not in value exceed thirty-five dollars or, in boxing, a maximum amount established by the U.S. Amateur Boxing Federation.