Does this bike count as antique? I found this bike.  



The front wheel is ruined. Back is normal, but I can replace it if it worth.
It have 5 gears.
It have no serial number under BB.  

So here my questions:
1. Can anyone tell when this bike was manufactured?
2. How much can a bike like this cost if fully repaired?
3. I can get any parts (good quality), so, if it worth to repair, what parts should NOT be changed (as antique), and what HAVE to be changed to modern parts?
Just estimating from the picture it could be late seventies early eighties
I see similar bikes for sale at around 150 €
With a bit of effort it coud be turned into a robust, efficient commuter, but it is not worth too much as antique. The frame is the best part, but equipping everything else new might get expensive. But the front wheel doesn't look that ruined, you could put new spokes. A thorough cleansing and lubing and new cables and that and the bike could go as it is. I'd put wider tires but that could be a problem with the fenders. Also old brakes like those can be weak, so that could prove a necessary change.