(i) If a person who last became a member of a public retirement system of the state before July first, nineteen hundred seventy-three retires, such person shall, upon reentry to membership in a public retirement system of the state, be subject to all retirement rights, privileges and obligations which would pertain to such person had he reentered membership in such retirement system on June thirtieth, nineteen hundred seventy-three.
(ii) If a person who last became a member of a public retirement system of the state after June thirtieth, nineteen hundred seventy-three but prior to July first, nineteen hundred seventy-six retires such person shall, upon reentry to membership in a public retirement system of the state, be subject to all retirement rights, privileges and obligations which would pertain to such person had he reentered membership in such retirement system on June thirtieth, nineteen hundred seventy-six.
(iii) The provisions of this article shall not be construed to repeal, amend or modify any provisions of law or rules or regulations in effect on June thirtieth, nineteen hundred seventy-six issued thereunder which govern the reemployment of retired persons by public employers.
(iv) Notwithstanding any other provision of law, any member of a public retirement system who retired after having last entered such system prior to July first, nineteen hundred seventy-three, and thereafter reentered service and joined or rejoined a public retirement system prior to April first, nineteen hundred seventy-seven, shall be entitled to all the rights, benefits and privileges and subject to all the obligations set forth in any law or laws relating to public retirement systems to which he would have been subject or entitled had he reentered membership in such retirement system on June thirtieth, nineteen hundred seventy-three.
(v) Notwithstanding any other provision of law, any member of a public retirement system who retired after having last entered such system after June thirtieth, nineteen hundred seventy-three and prior to July first, nineteen hundred seventy-six and thereafter reentered service and joined or rejoined a public retirement system prior to April first, nineteen hundred seventy-seven, shall be entitled to all the rights, benefits and privileges and subject to all the obligations set forth in any law or laws relating to public retirement systems to which he would have been subject or entitled had he reentered membership in such retirement system on June thirtieth, nineteen hundred seventy-six.