Doubt it. First the bike has a front and rear brake, no reason for a coaster brake. Second you can see a Sturmey Archer shifter, pulley, and cable mounted on the bike. Gonna have to go with Sixty Fiver on this one...

As far as the offset cranks go it could be a broken (compressed) cotter pin, or somebody could have installed one backwards. They have to be installed opposite each other. Either way, as long as the hole in the crank arm is not enlarged it is easy to fix.