The Antique Acme City "Metropolitan Patent" Whistle from J Hudson & Co is a collectible item dating back to the WW1 era. Made in the United Kingdom, this whistle is a piece of historical memorabilia that captures a significant time period in history. With a police and military theme, this whistle is a unique and valuable artifact for collectors interested in vintage police equipment. Its design and craftsmanship reflect the attention to detail and quality of that era, making it a sought-after item for enthusiasts of antique police memorabilia.