Antique Brass Police Whistle Stamped Metropolitan Made in England on End

Description

Estate find. This Metropolitan / Made in England whistle was found among the belongings of a former policeman who served in the NYPD in the 1940's and whose father served before him in the same department in the 1920's-'30's. Not sure if this was used during their police service, during their military service, or neither. Pretty sure it's brass but not 100% sure; has a tinge of "bluing" on one end so perhaps some other metal? Has a silver-goldish appearance to the metal. Is stamped "Metropolitan Made in England" on the end of the whistle where the small ring is located and through which the leather strap is attached. Measures 3" long. This whistle has finish wear, darkening of metal, and general finish wear. Also has one small dent just below one of the slit-type air holes. I tried blowing this but it didn't seem to work; though I know there is a knack to using it. So bottom line.... not sure if it works or not. A very interesting item; I don't usually see these stamped on the ends of the whistle.
Sale final; no return. Thanks for looking!
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