The tax collector of each county shall be supplied with a sufficient number of tax receipts to be used by him in the collection of both the privilege tax and the ad valorem tax on all taxable motor vehicles in his county. The tax receipt for these purposes shall be a combination receipt and shall carry a number which shall be the same number as that of the road and bridge privilege tax receipt and tag number for each such motor vehicle. Under no circumstances shall one tax receipt be used for receipting the ad valorem taxes on more than one motor vehicle.

There shall also be ample provisions made on these tax receipt forms for receipting ad valorem taxes collected for any municipality or municipal separate school district in the county, in case the county tax collector is legally directed as hereinafter provided to collect such taxes at the same time such tax collections are made for the county. This combination tax receipt form shall be prescribed by the tax commission in cooperation with the administrator of the road and bridge privilege tax law, and the administrator of the road and bridge privilege tax law shall supply them.

The county tax collector of each county shall also secure an ample supply of ad valorem tax receipts to be used by him in collecting the ad valorem taxes on all motor vehicles in his county for which the road and bridge privilege tax license will be issued by the administrator of the road and bridge privilege tax law. Ample provisions shall also be made on these forms for receipting any municipal and municipal separate school district ad valorem taxes collected, in case the county tax collector is legally directed to collect such taxes. All such ad valorem tax receipt forms for each county, for the collection of ad valorem taxes only, shall be numbered in consecutive order beginning with the number “one”; they shall be made up in triplicate, the exact form of which shall be prescribed by the state tax commission, and they shall be supplied by the county board of supervisors. A separate receipt shall be issued for each motor vehicle on which ad valorem taxes are paid.