Dutch 'Schalkhaar' Police Cap Cocardes. The 'Schalkhaar' Police was a Police unit during the war, named after the place Schalkhaar near Deventer. In Schalkhaar was the training facility of the unit. This unit was controlled by the Dutch NSB (Nationaal Socialistische Beweging) movement. Dutch made example, complete with all 4 prongs. Nice original example in mint and unissued condition!