Inert WW2 German Aluminum Fuse

This would appear to be a very unusual and rare early WW2 German aluminum fuse. Currently we can not find any details of its existance or of anything that closely matches it. Its clear been fired and bears the original Nazi markings and codes. The most obvious is the date of 1937 and 10(hut)* . The military Waffen acceptance looks to be WaA509.