NSKK Eagle - what for?

[Stepdale]

Hello All,
I got this NSKK eagle, but have no idea what it is for or what a value is. Does anyone have an idea? Maybe it's for a sport shirt? Would appreciate any info from some of you political collectors out there.
Thank you,
Dale

[castle]

its a sport shirt eagle..today value around 75$ maybe more..

[Stepdale]

Thank you!