NSB Machine Woven Shirt (or Tunic) Arm Badge. The Dutch "Nationaal-Socialistische Beweging" (National Socialist Movement) was founded by 'Anton Mussert' in December 1931 and was a Dutch pro-German Nazi Party. The Dutch-made arm badge is nicely machine-woven. These badges were in my opinion specifically intended for wear on the black linnen shirts. Decorative original NSB arm badge in good condition!