The German Helmet, with it's unique 'Coal Scuttle' shape, are items that I actively seek. Values on these helmets range from as low as $50(German Police Helmet) to as high as $2,200 (German Paratrooper Helmet).

 

 

There are many different branches of service that will dictate value of a german helmet, including Luftwaffe (airforce), Army, Navy, NSKK, SS, SA, Regional Authorities, etc. Let me see it before you sell it~