I'd be concerned with just how old the well is -- and how deep.
Years ago, we didn't have rules as to how far the well had to be from septic systems (now 75' in my town), and there were a lot fewer septic systems around "back then".
It
could be worth having (for plant-watering), or it may not be worth the trouble to restore.
If used infrequently, always leave one extra covered pitcher (anti-mosquito) of water to prime the pump for next time.
Even the olde "bucket-style" leather washers are still available today, though.
