Picked this up this shell at a gun show and I have zero idea what it is. Given the hard rubber-like material, it seems to be a classroom training aid. The fuse portion is non removable.
Shell portion states: 1400, IV, FES 18, No. 6.37.P
Fuse portion states: EKzdr C/28 awl 131 /41 and has Nazi eagle on it
Looking to get an idea of what it is and what the shell is worth.
Thank you!