74-49a33. Same; basis for computation. Notwithstanding the provisions of K.S.A. 74-4913 to the contrary, any employee of a county who became a member of the Kansas public employees retirement system on February 1, 1966, following the employer's entry date of January 1, 1966, and who was first employed by said county November 2, 1948, through April 30, 1960, and was reemployed February 1, 1965, shall upon retirement be granted service credit for all service prior to the employer's entry date whether such service was continuous or not. The prior service benefit shall be computed by using a prior service annual salary of three thousand three hundred eighty-six dollars ($3,386).