(1) A certified copy of a birth certificate or state birth registration shall be proof of the date of birth for the purpose of completing an application for retirement benefits.

(2) If a birth certificate or state birth registration is not available, the board will accept the following, in order of preference, as proof of date of birth:

(a) baptismal record;

(b) selective service record;

(c) armed forces discharge;

(d) passport;

(e) school record;

(f) life insurance policy;

(g) naturalization record;

(h) alien registration record; or

(i) such other records as may be submitted by the member which are acceptable to the board.