This badge was never officially issued for obvious reasons, although it is quite a common find amongst Nazi memorabilia.Many of these commemorative badges do suffer from metal fatigue and corrosion after 70 years though. I have a very good example in my own collection.(The Colonel) 

Reichsparteitag September 1939

A National Socialist commemorative poster, 'And you triumphed nevertheless!' 

Und Ihr habt doch gesiegt !

In September 1939, Polish pilots, with the first aircraft did not have youth, destroyi 147 German aircraft.
