The Antique J Hudson 13 Barr St 'The Metropolitan Patent' Whistle is a rare and collectible piece that holds historical significance in the realm of police memorabilia. This nickel-plated whistle, dating back to a bygone era, serves as a unique reminder of the past and the evolution of law enforcement. Its design and craftsmanship reflect the intricate details and quality of a time when police communication was a crucial aspect of maintaining order in society. This whistle, with its police theme, is a fascinating addition to any collection of police memorabilia or vintage whistles. exceptional condition with excellent patenation on the nickel.