Any member who left county or district service on or before December 31, 1971, and became a member of a retirement system established under this

chapter in another county or of the Public Employees’ Retirement System, who did not elect to, or was not eligible to, leave his contributions on deposit pursuant to

Article 9 (commencing with

Section 31700) may now elect to leave his accumulated contributions on deposit pursuant to

Article 9 (commencing with

Section 31700) by redepositing in the retirement fund of the county or district he left the amount of accumulated contributions and interest he withdrew from such retirement fund plus regular interest thereon from date of separation. Any such member whose accumulated contributions are on deposit as provided in this

section and any other member who left county or district service on or before December 31, 1971, who became a member of a retirement system established under this

chapter in another county or of the Public Employees’ Retirement System and who elected to leave his accumulated contributions on deposit pursuant to

Article 9 (commencing with

Section 31700) shall be eligible for the benefits provided in this article, and for purposes of such benefits shall be deemed to have entered membership in such other system within days of his separation from county or employment. The deferred retirement allowance for such member shall be determined in accordance with the provisions of this

chapter applicable to members retiring directly from county employment on the date of his retirement. Any member who qualifies for a reduced age at entry pursuant to this

section shall be entitled to use such age only from and after the date he completes the redeposit as provided in this

section or, if he elected to leave his accumulated contributions on deposit pursuant to

Article 9 (commencing with

Section 31700), from and after the date he notifies the board in writing that he desires the benefits of this section. This

section shall not apply to members who are retired or who are not in service of an employer making him a member of a retirement system established under this

chapter or of the Public Employees’ Retirement System. Unless this

chapter expressly provides to the contrary the retirement allowance received by a member pursuant to this

section shall be calculated based upon the laws pertaining to the retirement system of such district or county as of the date of retirement and not the laws pertaining to such system as of the date the member first left county or district service. This

section shall not be applicable to any member entering service after December 31, 1977.