Watch List notes:

NSW POLICE WHISTLE, 1914-1920, tube whistle in nickel plated brass with suspension loop and with attached brass chain with suspension hook attached to end, the top of the whistle is impressed, 'PATENT 5727.08', and the side is impressed, 'THE Metropolitan/PATENT/N.S.W/Police' and again on the side but near the mouthpiece is impressed, 'J.HUDSON & Co/244 BARR STREET/BIRMINGHAM'. Very fine and scarce.