Crank set and gears.

So looking at the repair work it needs, lets start with 

what looks like the original steel, cotterless crankset: 

The right side crank arm has been bent so badly it can't rotate 

past the front derailleur. How do you bend a steel crank arm?

and while we're on the subject of the front derailleur, i can't work 

out if it's original. It looks to me like it's been bolted on as after thought:: 

It's been placed over the artwork

and it would have prevented the pump from sitting in the pump holders. 

(You can see the pump holders at the top and bottom of the seat tube below in this pic)

with a close up of the bottom pump holder below: 

(the aluminium stand must have been added later)

I can't decide if it was originally just a one speed, 5 speed or 10 speed. It has two gear 

cable clips/holders on the down tube and one on the top for the rear brake, 

and it also has two shifters, although they might not be original. 

** update **

according to this site: the date stamp on the back of the Suntour "AH" indicates that it was manufactured in 1984!

At first I was disappointed that the chain guard seemed to be missing. I thought perhaps it had been removed to fit the new derailleur but on reflection, I can't seem to see any evidence of there having been one. Surely they wouldn't bother painting the detail on the chain stay if there was going to be a chain guard?