Help with a vintage Oysterquartz Datejust

[beehiveblack]

I recently won this family gem in a coin flip (tails took it) It belonged to my now deceased Grandfather... but, I am relatively new to the watch game in general and never really paid any special attention to Rolex as I scarcely though I'd ever spend the money to own one.

What I know:
Rolex OysterQuartz DateJust 17000 (SS obviously)
Bought between '55-'79 I assume
Jubilee Band (?) marked with a "B"
Serial number on back top right of case is 8085xxx
Box and paperwork is currently MIA but will most likely turn up as it wasn't like my Grandfather to throw things like that away.
Currently not in running condition as it sat for many years because my grandfathers poor eyesight led to him getting a larger dialed watch.
Presumed dead battery

Luckily I live close to my states only AD and I have done more than a fair bit of business with them in the past so, I plan to run it down to them to have it given the once over.

Questions:
I assume this watch needs to be wound as it isn't an automatic, correct?
Can anyone give me a better than fair assessment on when the watch was made?










Thanks in advance and any information is greatly appreciated
I will post pics in a few moments...