A Chrome Siebe Gorman divers torch stamped to the side 'SIEBE GORMAN & CO LTD. MAKERS.LONDON' some of which is not visible. 
Stamped to the rim of the bulb 'A.P 4456' - Admiralty Pattern.
Convex lens with which should be a four prong bezel but has only two of the prongs and leather wrist strap. 
Reflector present inside and battery spring.
Measures 28.5cm long.
Weighs a tad over 1kg.