The User's Review: Konica Hexanon Zoom/Zoom-Hexanon 80-200 mm 3.4
There are five versions of this zoom according to buhla.de. Here I have the first and fourth versions. The tripod mount socket on the later version is closer to the lens mount, this may be better to balance the zoom and camera on a mono/tri-pod. The glass in my copy of the first version becomes yellowish through age (the last image).