Vauxhall Motors Luton assembly workers officially numbered badge

A very scarce original possibly for National Service 1940's period 'Vauxhall Motors assembly workers officially numbered badge; gilt winged rectangular shaped example bearing pronounced low issue security number '211'; the reverse impressed with maker's details 'Thomas Fattorini Ltd Regent St. Birmingham'. Very good condition, complete with original pin fittings, minimal wear. Size 33 x 19mm.