I have this lacquered steel shell casing, 23 inches tall. What type of projectile will I need to keep it correct? The only markings legible is stamped in yellow on the case side. See picture. I suspect it is US Army, is it a tank round or an artillery round? Marking, " 3 IN. MK II M2 B1 Lot 3298 1944". I have it pictured next to a Navy 3 in for comparison. Once again, thank you for your time and knowledge.



