An original issue Birmingham Fire & Ambulance Service 1948 to 1974 thin rim variation cap badge.
Birmingham Fire & Ambulance Service was formed after world war 2  (1939 to 1945 ) in 1948 when the NFS ( National Fire Service 1941 to 1947 ) handed back fire control to regional county & county borough fire brigades. Birmingham, a large brigade on the outskirts of Warwickshire had 19 fire stations covering 80 square miles of area & had variations of the badge manufactured during its existence with thick & thin rim variations & an error variation where the bottom left quartet section of the shield had the red & yellow colours around the wrong way !
This is a thin rim variation & the front patina of the enamel is in really good condition. However there is only one cap fixing lug intact to the rear of the cap badge.