Scarce Victorian ‘Beaufort/Conical’ Whistle (FIELD, 233 Holborn)

This original, very early, scarce, brass ‘Beaufort/Conical’ police whistle from the 1850/60’s is stamped ‘FIELD, 233 HOLBORN’ on the side, who operated between 1842 and 1877. Other than age related wear, it’s in great condition, has a nice weight and works well. It measures 8,5cm in length (7,2cm without ring).