NUS Farm Camps 1949 school harvest scheme badge

A very scarce original 'National Union of Students Farm Camps 1949 celluloid tin button badge'. Very good clean condition, complete with original pin fitting, no signs of any foxing. Diameter 25mm. Part of the 1941–1950 post war students labour scheme in the drive to increase home food output when harvest was in full swing and food was in short supply.