Air Arms Khamsin
Thumbhole (light walnut?) tap loading sidelever. (very thin at the thumb on the stock...)
The middle one.
I used to have a Kassnar 3-9x40wa Etched reticule pa adjustable scope. I saw one go for £50 a few years back (which is what i paid for mine 2nd hand in the '80s...) never seen one since. Wonder if it's as good as i remember... the *** scopes back then were very good.