Luftwaffe administration tunic in the rank of Regierungs - assessor

Luftwaffe administration tunic in the rank of Regierungs - assessor, the insignia on the tunic probably was applied postwar, we are not sure. The tunic made in Paris and there are the tailors tag on it. Size approximately 46-48, condition is well worn, has some damage on the liner due of wear/service, but have no moth and age damages.