This is a nice set of 2 unissued original 'NSB' seals (sluitzegels). 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 seals measure approximately 5,5 x 2 cms in size. Nice colorful set of NSB seals!