Notwithstanding the provisions of Kan. Stat. Ann. §§ 74-4913 to the contrary, a member of the Kansas public employees retirement system who was first employed by a participating employer on April 2, 1953, and again employed by said participating employer on June 25, 1956, and again employed by the participating employer on July 23, 1957, and became a member of the system on January 1, 1962, said employer’s entry date, and who was retired on November 1, 1965, shall have her retirement benefit recalculated using the sum of three thousand forty-eight dollars ($3,048.00) as the prior service annual salary and final average salary.