The Kinglet Police/army Whistle.

vintage police or army whistle in fair condition. "The Kinglet" is a specific model of whistle produced by J Hudson & Co (now known as Acme Whistles) in Birmingham, England, around the 1920s.Military/Police Use: It was designed as a General Service Whistle (GSW), often utilized by police and military personnel.Size & Design: The Kinglet is known as a smaller-sized whistle, with similar dimensions to the Acme Scout Master Gamage.Manufacturer History: J Hudson & Co is famous for creating the Acme Thunderer and other whistles for the military, navy, and air force during the World Wars.