The insurance producer shall apply for a license for each vending machine to be used. The commissioner shall prescribe the form of the application. A fee of two dollars for each vending machine must be paid at the time of making the application. Upon approval of the application, the commissioner shall issue to the insurance producer a special vending machine license. The     license applies to a specific vending machine or to any machine of identical type which, after written notice by the insurance producer to the commissioner, is substituted for it. The license must specify the name and address of the insurance producer, the name and home office address of the insurer, the name or other identifying information of the policy or policies to be sold, the serial number or other identification of the vending machine, and the address, including the location on the premises, where the machine is to be in operation. A vending machine for which a license has been issued for operation at a specific address may be transferred to a different address during the license year upon written notice to the commissioner at the time of the transfer. The license for each vending machine expires April thirtieth of each year, but may be renewed from year to year by the commissioner upon approval of the application of the insurance producer, the furnishing of information requested by the commissioner, and the payment of two dollars for each license year or part thereof for each machine. Proof of the existence of a subsisting license must be displayed on or about each vending machine in use in the manner the commissioner may reasonably require.