Registered Medical Auxiliary Speech Therapist pin badge

A scarce original circa mid 1940's into the 1950's period 'Registered Medical Auxiliary Speech Therapist silver plated badge' the green enamel the centre inscribed 'National Register', the reverse impressed with maker's details 'J.R.GAUNT LONDON' and official issue number '3733'. Very good condition, complete with original pin fittings, no damage to the enamel.Height approx 32mm.