https://www.kellybadges.co.uk/police-prisons-uk-police-prisons-other-badges/26218-admiralty-constabulary-collar-badge-1949-52-with-kings-crown-chrome-plated-uk-police-or-prison-insignia.html
Admiralty Constabulary UK Police or Prison insignia
Admiralty Constabulary Collar Badge 1949-52 UK Police or Prison insignia for sale
admiralty constabularyuk policeprisoninsignia