Original U.S. WWII Corps of Engineers High Explosive TNT 1/2 Pound Block - INERT Manufacture Type_Original Items but lacks the former’s external

but lacks the former’s external visor cover (thus bearing a superficial initial resemblance to the old USAF P-4B helmet)

There is a large 73 in the middle

indicating manufacture by Richard Ringer GmbH

Buckle is a C closure type

Original U.S. WWII Corps of Engineers High Explosive TNT 1/2 Pound Block - INERT Manufacture Type_Original Items but lacks the former’s externalOriginal Item: Only One Available. These 1 2 lb TNT bricks were used by various Army, Navy, and Marine engineers and demolitions units. FM 5 31, Boobytraps and Landmines, explains the use of the half pound TNT block with several fuses, including how to arm and disarm them. The TNT block could be used with the delay fuse, release fuse, or pressure fuse. This 1 2 TNT block is completely empty and totally Inert. This example is in complete compliance per