This is an original gas tank for the early Datsun 510 Sedans.  From an Arizona car.  The tank is solid and in good condition.  The inside of the tank is clean with some light surface rust on the baffles.  The outside of the tank has scratches and some surface rust.  There are only one or two very small dings in the tank.  Please inspect the photos for condition and to be sure this is what you need.  The fittings, tubes, and threads are in good condition.  Ask any questions.