Stores Ref. 6D/112. Manufactured by The Automatic Light Controlling Co. Ltd. Bournemouth. This solid brass bayonet connector socket was connected to the oxygen supply in every crew position in wartime bombers. Each crewman could then plug in his oxygen tube using an extension tube ending with a 6D/101 plug. Painted in its original semi-gloss black finish. Mint unissed condition in the original issue box. A.M. marked. Stock code O17922.