This is an RLB aviation donation pin. It is constructed from a die stamped steel base and painted black. The oval shaped front features a plane flying above a house that has the 1st pattern RLB logo on it. The outside of the badge reads (Luftschutz Tut Not) which translates to “Aviation is Necessary”. The reverse of the badge is hollow and has a soldered steel pin that’s in working order.
This badge is very interesting and in great condition showing a lot of detail.