Original French WWI F1 Hand Grenade with Original Fuse - Inert Japanese Replica Above the left ear interior

Above the left ear interior of the apron has a stamped manufacturer's code and size ET6[4] indicating it was manufactured by Eisenhuttenwerk AG

Two additional parts are the BCU (battery coolant unit) cartridge which is inserted into a well in the underside of the gripstock with a quarter-turn to lock it (something which is almost never shown being done in media) and provides a 45 second supply of both power from a thermal battery and argon coolant gas for the missile seeker once activated (meaning the user has 45 seconds to fire the weapon once the BCU has been activated

and not stainless

The dome stamp in this helmet is quite clear and reads “DK37”

This would be a very convincing "persuader" to deter thieves and looters

Original French WWI F1 Hand Grenade with Original Fuse - Inert Japanese Replica Above the left ear interiorOriginal Item: Only One Available. This is a totally inert BATF compliant genuine World War One French F1 Grenade with an original fuse. It is threaded and installed into the grenade, apparently long ago, and can still be removed. Condition is excellent, though there is quite a bit of oxidation on the grenade body. This example looks to possibly have been unused and was kept after the war or found shortly after. It still retains much of its original