First: I'm sorry my English is very poor!
I have a watch from my Grandfather, in really bad condition. My Grandma find this in last year.
What i know:
It is a TELLUS. TeLLus ANTIMAGNETIC on dial.
Case Back lettering: 4729, Acier Inoxydable, Staybrite, push back.
Case Back Inside lettering: 191952, and two hand-etched "date?!" FJ 74.10.18 and "JJ"71.3.25 (in the "JJ" i'm, not sure)
Movement lettering: Tellus *, Cal.661, number: 952 on the outer edge.
It is in bad condition, but its works well.
I don't know, how its looked when it was new? Have somebody a picture?
Which year come from?
Worth it renovating? If worth, max how much $ for renovating? Dial+Glass (Plexi) are the worst condition...
Some pictures (sorry i'm a bad photographer):