That is a mid to late 60's Rover ranger. It is the early model with the straight not curved handlebar, also the deck engagement was quite different to the later models. Look like the original Very early briggs and stratton engine with the metal fuel tank and probably the odd carburettor setup of the early models.
Not especially sought after, those early ones are getting quite rare these days though. Running condition I would say $100+ but not running/seized/rusted basically give away.
