United Kingdom. A Lot of Three Whistles visually-hidden the reverse with a threaded

the reverse with a threaded screw-post accompanied by a backing plate

with a flat central ridge

bright silver-aluminum diamond patterned NCO’s tresses to all four sides

the remnants of an adhesive is visible to the obverse of one of the tabs

crsip detail

United Kingdom. A Lot of Three Whistles visually-hidden the reverse with a threadedA British Military Signal Whistle, in nickel plated brass, marked HUDSON & Co. BIRMINGHAM 1943 with broad arrow, measures 18 mm (w) x 82 mm (h), very fine. A British 1937 Whistle, in nickel plated brass, marked HUDSON & Co. BIRMINGHAM 1937, underneath impressed MADE IN ENGLAND, with keyring attached, very fine. An Acme Thunderer Whistle, in nickel plated brass, marked THE ACME THUNDERER UC, underneath impressed MADE IN ENGLAND, with key ring attached,