St. John Ambulance Association White Metal Uniform Badge

Material: White-metal (nickel or silver-plated brass)
Size: 35 mm
Description: This original British and Commonwealth service organization uniform badge measures 35mm in diameter and is struck in a brilliant, durable white metal alloy. The central circular medallion showcases the iconic eight-pointed Maltese cross set against a finely textured, crosshatched background field. Nestled tightly within the four main corner spaces between the arms of the cross are alternating heraldic beasts, depicting two lions passant and two unicorns statutory. Enclosing this central design is a wide outer border ring deeply embossed with the organization's formal name title "THE ST. JOHN AMBULANCE ASSOCIATION". 
Reverse: This back view reveals the hollow-struck construction of the St. John Ambulance Association uniform piece, showcasing the mirror-image incuse outlines of the front design elements. Positioned prominently across the top is a rectangular raised identification plate deeply stamped with three lines of clear block text reading "REGISTERED AT / ST. JOHN'S GATE / LONDON". Flanking the left and right center edges are two robust, curved copper or brass wire loops securely brazed to the main body field. A unique, individualized issue number "2023" is neatly hand-engraved or stamped along the upper perimeter curve directly above the central identification block. The entire surface is covered in a natural, aged golden-brass coloration with tiny traces of dark patina in the deep recesses.
Circa: 1910-1960s
Notes:
This reverse layout provides vital historical evidence regarding the organization's administration, as St. John's Gate in Clerkenwell, London, has served as the official headquarters of the Venerable Order of Saint John since its modern revival in the late nineteenth century. The prominent "Registered" stamping indicates that the specific design and dimensions of the insignia were legally protected against counterfeiting or unauthorized commercial manufacture through the British Patent Office. This stringent registration system ensured that all official badges remained under the strict control of the Grand Priory, maintaining the integrity and public trust of the first aid volunteers who wore them on their uniforms.