Any policeman who withdraws on or after July 8, 1957, or any policeman transferred to the police service of the city under the Exchange of Functions Act of 1957 who withdraws on or after July 17, 1959, after completing at least 20 years of service, for whom the annuity otherwise provided in this Article is less than that stated in this Section has a right to receive annuity as follows:
Any policeman who has completed 23 years of service prior to his attainment of age 53 in the service and continues in the service until his attainment of age 53 shall have added to his annuity, computed as provided in the immediately preceding paragraph, an additional annuity equal to 1% of such average salary for each completed year of service or fraction thereof in excess of 23 years up to age 53.
If, on withdrawal, total service is less than 20 years, the policeman shall not be entitled to an annuity under this Section but may receive an annuity under the other provisions of this Article or, if entitled thereto under Section 5--163, a refund of the deductions from salary, including, in the case of policemen transferred to the police service of the city under the Exchange of Functions Act of 1957, the additional contribution paid on salary received from August 1, 1957, to July 17, 1959, as provided in the Park Policemen's Annuity Act, together with interest at 1 1/2% per annum.
Moneys voluntarily contributed under the Policemen's Annuity and Benefit Fund Act of the Illinois Municipal Code, or the Park Policemen's Annuity Act, shall be refunded to the contributing policemen who were in service on January 1, 1954, or in the case of policemen transferred to the police service of the city under the Exchange of Functions Act of 1957, who were in service on July 17, 1959.
The age and service annuity formula in this Section shall not apply to any policeman who, having retired before July 8, 1957, or before July 17, 1959, in the case of a policeman transferred under the provisions of the Exchange of Functions Act of 1957, re-enters the police service after such dates, whichever are applicable.
40 ILCS 5/5-132