DEACTIVATED INERT. This is a British 1” aiming tube round used for naval practice in the Royal Navy for practice with the large guns. The device, developed by Mr Morris of The Morris Company, was an adaptor which fitted inside the barrel of the gun or mounted on top of the barrel to reduce the cost for training from 1888 onwards. The aiming tube could be either percussion or electric primed. This is an electric primed round which originally had a screw in electric primer. The brass cartridge is headstamped E C I (Electric Cordite Mark I). The unfired lead projectile has 2 cannelures and a copper gas check on the base. The projectile is mounted on a brass and bakelite base with the mounting stud screwing into the original electric primer threads. The price of this round includes UK delivery and no licence is required to possess inert rounds in the UK if retained as a part of a collection or display. O 2251