WW1 German Eierhandgranate Egg Grenade With Makers Mark WW1 Inert German egg grenade. INERT £55.00 Quantity: at £55.00 each Add To Basket A superb Great War German egg grenade. Completely inert. Thoroughly cleaned of any explosive material. Makers mark to base. The integrity of the metal is solid. Guaranteed original. Free UK registered postage.