Ragged Staff - one of the most known badges of the late 14- early 15c. England. Belonged to Earls of Warwick. The cross on the staff possibly symbolizes a piligrimage to the Holy Land.
Badges were used by medieval pilgrims as souvenirs from the holy places which they had attended, as tangible proves of attendance such a holy place. Each place of cult had it's own badges so seeing a pilgrim wearing certain badges one could name the places which this pilgrim had visited. Also, so called secular badges existed which could belong to an authority or a noble who gave these badges to his/her courtiers, srevants, supporters and so on. Badges commemorating a major event existed, too.