Need Authentication on Arm Band

[Fallout8]

Hey Everyone. I curious about this armband I found for sale. Been wanting one but don't want to waste my money on a fake. Thanks for the help on the authentication

-Mark

[TWS]

I have a few armbands in my collection from way back in the day, but I do not study or specialize in them.
With that disclaimer, I would not purchase this one.

[Gwar]

I think it has a chance.. I believe I have seen that Hersteller number before and
'B' is for cotton if memory serves me correctly, wait for more opinions..

[Fallout8]

Thanks for the help guys, I hope I can find someone who has a definitive answer.