Luftwaffe badge from Peenemunde where the Germans worked on the rocket program

Luftwaffe badge from Peenemunde where the Germans had the rocket program. I got it from my grandfather who was a major in the Luftwaffe and worked on the rocket program i.e. V-1, V-2. I have another one for sale on this site also from Peenemunde but looks different. I've never seen one of these before even after 30 years of collecting so I'm not sure what to ask but will go with the educated guess of $350 o.b.o. but must be a reasonable offer and with all my stuff if not completely satisfied you have a hundred percent money back guarantee. It's about 2" or 2 1\2" long