These were introduced towards the end of WW2 and were used instead of the older fashioned voice pipes. It will date from circa 1944. It's being sold as aspares/repair/display item.
ORIGINAL WW2 ROYAL NAVY CPO PEAKED CAP & WHITE COVER. SUPERB WW2 BLACK TOP CAP
WW2 Royal Navy Medal Group Including Malaya and Korea Medals to LS Astridge
Rare Silver WW2 Royal Navy Patrol Service Minesweeper / Anti Submarine Badge
Very Rare Chief Petty Officers Dinning Plate WW2 Royal Navy
WW2 Royal Navy box dated 1944, paper seal over lock
WW2 Royal Navy A3 Poster Frame
