Wow that is a 70's Murray with everything still there including those plastic caps on the wheels axle but extremely dusty. If it can be cleaned up great and doesn't have bad rust it should be worth something good.
Mid to late 70's Murray made for sure. Possible similar to one of these from the 76 Murray catalog. If you find the serial number and it starts with a 502, then it was sold through Sears. Kenny.