Old original CAT Crawler, old Briggs & Stratton engine that is loose and not running; fenders & toolbox are replacements, seat pad replaced, rest looks original and pretty straight; has some new bolts holding the engine in place; straight-chain drive to the axle in the back; We don't know if this is one of the few factory ones built, or if it is something someone converted for a kid to play with; overall pretty straight with a heavy patina; but still a super cool piece!