Notwithstanding the provisions of Kan. Stat. Ann. §§ 74-4913 to the contrary, any employee of a participating employer who first became a member of the Kansas public employees retirement system on November 1, 1963, and who was first employed by a participating employer on September 15, 1930, through November 20, 1936, and was reemployed by said participating employer in October, November and December, 1952, and in the months of January, April, August, October, November and December, 1953, and was reemployed by said participating employer on March 22, 1954, through July 4, 1961, and was reemployed by said participating employer on October 22, 1962, shall be granted prior service credit upon retirement for all service with said participating employer prior to January 1, 1962. The prior service benefit shall be computed by using a prior service annual salary of three thousand one hundred thirteen dollars ($3,113).