A marriage record established before age 36 may be substituted for the other SSA record
            where a NUMIDENT record does  not  exist (see GN 00302.100 D. and GN 00302.120) if it corroborates one of the first 5 documents listed above, and if the marriage
            record substantially agrees with the allegation.
         
         When only the claimant's age appears on the marriage record, at least one other supportive
            document must show month and year of birth. If the claimant alleges a DB on the first
            or, if material, the second day of the month, the day must also be shown; the day
            must also be shown if the individual is an SSI applicant whose first month of eligibility
            is the month of attainment of age 65.