(a) Judges' retirement benefits. - The annual retirement benefit payable to a probate judge retiring pursuant to subdivisions (2), (3), (4), and (5) of Section 12-18-84 shall be 75 percent of the base sum or salary upon which such judge is paying the percentage as provided in subsection (a) or subsection (b) of Section 12-18-82 immediately prior to retirement. Such retirement benefit shall be payable monthly from the State Treasury for the life of the beneficiary.

(b) Spouses' benefits. - After the death of any probate judge who has held office for a minimum of five years, his or her spouse shall receive a yearly benefit from the State Treasury equivalent to the greater of $480.00 per year, multiplied by the number of years of service, not to exceed 10 years, or three percent of the base sum or salary upon which such probate judge was paying the percentage as provided in subsection (a) or subsection (b) of Section 12-18-82 immediately prior to retirement, multiplied by the number of years service, not to exceed 10 years, payable monthly for the remainder of such spouse's life or until his or her remarriage.

(c) Judges' disability benefits. - Any probate judge retiring pursuant to subdivision (1) of Section 12-18-84, who has served for 10 years or more shall be entitled to a disability benefit allowance payable monthly from the Judicial Retirement Fund equal to 75 percent of the base sum or salary specified in subsection (a) or (b) of Section 12-18-82 applicable at the time of retirement. If such disabled probate judge has served less than 10 years, he shall be entitled to receive from the State Treasury a monthly disability benefit that is equal to 25 percent of such base sum or salary plus 10 percent of such base sum or salary for each year of service in excess of five years; provided, however, that in no event shall such justice or judge receive less than 30 percent of the annual salary being paid to a full-time probate judge, as the case may be, from the State Treasury.

(d) Minimum age for receipt of retirement benefits, etc. - Any provision of this article to the contrary notwithstanding, a probate judge shall not be eligible to retire on service or otherwise receive service retirement benefits on account of his participation in said fund unless such member shall have attained 60 years of age; provided, however, that nothing in this subsection shall be construed as limiting, altering or amending existing provisions of law relating to eligibility for entitlement to disability benefits.