Except where the principal business of the operation of a store is the operation of machines or devices for which a license fee is prescribed by Section 743.10, no license fee shall be required of persons keeping or maintaining such machines or devices owned by them in their own licensed stores; provided, however, that any person exempt from such license shall obtain from the Finance Director, a license receipt, stamp or other evidence of exemption, at a cost not to exceed fifty cents (50¢) each, showing that he is so exempt, which shall be effective for the period as provided for annual license in this article; but to obtain such license receipt or other evidence of exemption, he shall make an affidavit and produce such other evidence as to the facts entitling him to such exemption as the Director, in his discretion, may require, which shall be on a form to be prescribed by the Director.
(1968 Code §14-29)