Type 100 20mm HE Round

I picked this up at a local show because it looked like something a Marine may have picked up as a battlefield souvenir.

This is type 100 20mm HE round for the Type 98 machine cannon.  These would have been used in a ground and anti-aircraft role.  When I bought the round it had already been previously properly de-activated for display.  Still retains all markings including the often missing stamps on the brass shell.