I was going to post this on the earlier sight post but here will work.
on the left, 99PE, cal 243. produced 1967, serial #1,1425xx, muzzle diameter .571", barrel at rear sight .846", barrel at breach 1.024". Lyman marked sight, with the triangle
on the right, 99DE, cal 284, produced 19645, serial #1,083,9xx. Muzzle diameter .620", barrel at rear sight. .877", barrel at breach 1.024". Lyman marked sight, with the triangle
on the left ,75th Firth Ann. produced 1970,serial #12xxAS, long sight, vertical line,
on the right, PE special, 308 cal, produced ?, serial #1,160,000, Lyman, elevation adjustment markings slightly different than the regular PE and DE
on the left EG 243, produced 1957, serial # 9289xx, long non-folding sight used for a number of years prior to this
on the right 99 EG 358, produced 1959, serial #9673xx, long folding sight with a straight line.
99E, 300 Savage, produced 1959/1960, serial #9688xx, LBC L, first appearance of the cheap stamped 99E rear sight. This is one of the transition 99E's that is more like an EG than an E.
99DL 300 Savage, produced in 1962, serial #1,044,0xx, long folding sight with the vertical line.