This is definately a rare find, a vintage Murray Zoom Zoom pumper trike, it's a last production run.  It's the 60's-70's era.  Great shape!  The tires are in great shape!  It works really well, to make it work you pump the handlebars back and forth to power the bike, the steering is down by your feet.  It's a neat collectable that still works and is fun to try!