This is a very rare genuine rear spoiler for 240Z, 260Z, and 280Z.
Unlike aftermarket one, it fits the hatch much better, and the design is better, and I can even provide you with matching hand made gasket(There were gaskets at right and left end of the wing, but not well known fact)
There were few cracks, but just being professsionally repaired. It has holes for “240Z” at left “Datsun” at right side from factory (UK) very unique! It takes 5 nuts to bolt on your car.