If any person, firm, company, partnership or corporation shall become the owner of a motor vehicle after March 1 of any year, and for that reason the registration is only a part of a year, the license tax therefor shall be as many twelfths of the annual fee as there are unexpired months in the year. If the license is not procured within 30 days after acquiring the motor vehicle, there shall also be added to the license a tax penalty of $10, and any person, firm, company, partnership or corporation paying or offering to pay the license tax after the same has been delinquent as herein provided, shall pay the $10 penalty thereon. Possession of a state license or license tag shall be conclusive evidence of ownership of any automobile or motor vehicle under the provisions of this subchapter.
(1989 Code, § 70.33)