I have a Luftwaffe helmet that one of my uncles picked up after a battle with German troops. I never got a chance to ask him exactly where he got it before he passed away. The helmet has a name and what appears to be a serial number of it's owner. Anyone know if it is possible to track the name down or where my uncle may have picked it up?

Name appears to be: Gengenbagh (some letters are hard to read)
Serial number is : L00215 or L00275

Thanks!!