A friend of mine came across this projectile at a garage sale. It Measures 1.25" x 3.5" tall (31.75mmx89mm) so I’m assuming a 30mm round. I can’t find anything about the markings on the web and thought I’d share here after coming across this sight. The round is supposedly from WW2. The markings around the primer/fuse/tracer insert can’t be read. The markings on the primer/fuse/tracer read P.F. | MIN. CAL M.I. | 1075 84 and there is a N inside a square in the center. There are two holes on the insert that you’d use with a tool. Then, on the grooved copper driving band there is an L|T| 1|75|13 stamped. Something can be heard rattling softly inside when the unit is moved about.
Any help you could give me would be appreciated.