May elect to become a supernumerary tax collector, tax assessor, revenue commissioner, license commissioner, or other elected or appointed official charged with the assessment or collection, or both, of ad valorem taxes of the county in which the official serves by filing a written declaration to that effect with the Governor. If the Governor finds any declarant qualified either under subdivision (1) or (2) of this subsection, a commission as supernumerary tax collector, tax assessor, revenue commissioner, license commissioner, or other elected or appointed official charged with the assessment or collection, or both, of ad valorem taxes for the county in which the official has served shall be issued to the declarant by the Governor. In computing length of service, the time served as any other county-wide elected official or the time served as chief clerk of the tax collector, tax assessor, license commissioner of any county, shall be counted.
Ala. Code § 40-6-1 (1975)