I bought this back at tankfest 2017 labelled as a A7V shell. Presumably that was just a gimmick to make it sell and presumably it was fired from a regular cannon. But i want help to see if this truly is a 5.7cm maxim-nordenfelt shell.
The markings POLTE MAGDEBURG , APRIL 1916 , 3 , SP252.

Should i give measurements?
The markings POLTE MAGDEBURG , APRIL 1916 , 3 , SP252.


Should i give measurements?