WW1 Voluntary Recruiting Staff tin button badge

A rare original First World War period quickly produced 'Voluntary Recruiting Staff badge'; small celluloid tin button example bearing George V crown to centre, within patriotic red, white and blue title surround; the rim printed with unusual maker's details 'Ivorine Manf & Co 34 Gt.Titchfield St. W' (situated in London). Very good condition, complete with original early pattern round lapel fitting, minimal foxing. Diameter 22mm.