The board of fire and police commissioners shall give preference for original appointment to persons designated in section 2-1-7 of this chapter whose names appear on any register of eligibles resulting from an examination for original entrance in the classified service of the fire and police departments of the city by adding to the final grade average which they receive or will receive as the result of any examination held for original entrance, five (5) points. The numerical result thus attained shall be applied by the board of fire and police commissioners in determining the position of such persons on any eligibility list which has been created as the result of any examination for original entrance for purposes of preference in certification and appointment from such eligibility list. The board shall strike off the names of candidates for original appointment after such names have been on the list for more than two (2) years. (Ord. 826, 7-1-1980)