Item:
ONJR23RNA019

Original U.S. WWI 25 Pound Mark II Cooper Aerial Fragmentation Bomb - Inert

Item Description

Original Item: Only One Available. During WWI the U.S. adopted the British Cooper bomb as the standard. After further development the Mark II 25 pound fragmentation bomb was the result. The U.S. also adopted the Cooper bomb fuze and designated it the Mark XII nose fuze, then modified the fuze to meet our requirement of being able to drop the bomb unarmed in case of aircraft problems.

This type of explosive was designed to be used against troops. It had a thick metal wall and a relative small charge of explosive. Their purpose was to throw showers of fragments like those of the high-explosive artillery shell.

Bombs were carried on a simple rack under the wings of pursuit planes, usually four under each wing. They were dropped in pairs, one from each wing, starting with the outside progressing inward. When the bomb was released, the nose spinner was freed to turn which then rotated a plate in the nose, which eventually exposed the detonator to a firing mechanism, which would be activated when the bomb struck a solid object.

This genuine inert example of the MkII Fragmentation Bomb is offered in very good condition. It still retains the spinner fuse and fins and has been deactivated to BATF specifications. It is marked FAB on the side, which we presume stands for "Fragmentation Aerial Bomb", or something along those lines. The front of the fuse housing can still be removed from the bomb, showing U.S. Ordnance "Crossed Cannon" proofs on both the fuse and the bomb. It still retains the side hanging loop, however the one on the bottom of the bomb has broken off.

Measures 26 inches long, 6 inches at widest point and weighs 20 lbs (without explosives!). Ready to display!

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