At some time during the sixteenth century the practice was adopted, possibly following a usage long previously in vogue in the case of "Agnus Dei" (discs of wax impressed with the figure of a lamb and blessed at stated seasons by the Pope, which could be worn suspended round the neck) of giving a papal blessing to medals and even of enriching them with indulgences. During the revolt of Les Gueux in Flanders in 1566, One or some of these early Geuzen medals was coined with a political message and used by the Gueux faction as a badge. The Spaniards responded by striking a medal with the head of the Saviour and on the reverse the image of Our Lady of Hal; Pius V granted an indulgence to those who wore this medal in their hats.