WW1 On War Service 1915 munition workers enamel badge

WW1 On War Service 1915 munition workers enamel badge J.R.GAUNT LONDONA scarce original First World War issue 'On War Service' 1915 munition workers badge, gilt brass, blue enamel oval title, the centre bearing the 'Board of Ordnance' shield on white enamel ground, the reverse impressed with maker's details 'J.R.Gaunt London' and official issue number '48481'.