![WW2 British Officers Trench Whistles, pair, both maker marked Adie Bros, Birmingham, GRVI and dated 1940 and 1941. Working order. (2) WW2 British Officers Trench Whistles, pair, both maker marked Adie Bros, Birmingham, GRVI and dated 1940 and 1941. Working order. (2)](https://hansonslive.hansonsauctioneers.co.uk/images/lot/9125/91257_0.jpg?1605354605)
WW2 British Officers Trench Whistles, pair, both maker marked Adie Bros, Birmingham, GRVI and dated 1940 and 1941. Working order. (2)
![1908 J.Hudson, Birmingham, England Cavalry Officer's whistle. The whistle has a finger ring which enabled the whistle to be worn over a gloved finger. 1908 J.Hudson, Birmingham, England Cavalry Officer's whistle. The whistle has a finger ring which enabled the whistle to be worn over a gloved finger.](https://i.pinimg.com/736x/b1/20/d1/b120d1856101de67b323b2d420fa8f01--birmingham-finger.jpg)
1908 J.Hudson, Birmingham, England Cavalry Officer's whistle. The whistle has a finger ring which enabled the whistle to be worn over a gloved finger.
![File:Birmingham City Police Whistle 131 Barr Street c1885-1887 (13187005175).jpg - Wikimedia Commons File:Birmingham City Police Whistle 131 Barr Street c1885-1887 (13187005175).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/7/73/Birmingham_City_Police_Whistle_131_Barr_Street_c1885-1887_%2813187005175%29.jpg)
File:Birmingham City Police Whistle 131 Barr Street c1885-1887 (13187005175).jpg - Wikimedia Commons
![Vintage The Metropolitan Patent - General Service Whistle 13. Barr Street Birmingham J Hudson & Co Circa 1902- 1905 [SOLD] Vintage The Metropolitan Patent - General Service Whistle 13. Barr Street Birmingham J Hudson & Co Circa 1902- 1905 [SOLD]](https://www.tackagain.co.uk/3709-large_default/vintage-the-metropolitan-patent-general-service-whistle-13-barr-street-birmingham-j-hudson-and-co-circa-1902-1905-s.jpg)
Vintage The Metropolitan Patent - General Service Whistle 13. Barr Street Birmingham J Hudson & Co Circa 1902- 1905 [SOLD]
![32 The Acme Whistle A British Classic And The Referees Favourite Photos and Premium High Res Pictures - Getty Images 32 The Acme Whistle A British Classic And The Referees Favourite Photos and Premium High Res Pictures - Getty Images](https://media.gettyimages.com/id/101687758/photo/a-general-view-of-the-acme-whistles-factory-on-june-7-2010-in-birmingham-england-acme-whistles.jpg?s=612x612&w=gi&k=20&c=rrU5q5O2TZC_mrzWR4tZVrrf0uBGOQplCa3Q-7ZfVrM=)
32 The Acme Whistle A British Classic And The Referees Favourite Photos and Premium High Res Pictures - Getty Images
![Acme Whistles [J Hudson and Co (Whistles) Ltd] – Made in Birmingham, England | ukmade - UK Made Products - BRITISH MADE Acme Whistles [J Hudson and Co (Whistles) Ltd] – Made in Birmingham, England | ukmade - UK Made Products - BRITISH MADE](https://ukmade.files.wordpress.com/2012/12/police1jpg.jpg)