NSFK Badge- identification and appraisal

[Howlnwulf]

Apparently I cannot post attachments, so I will give a description. Its a sponsoring membership badge with backing lost to time, but the curious part is that imprinted on the back side is 1883. Any insight?

[RonR]

1883 is part of the number.

Complete number is 18837.

These pins are made by Gustav Brehmer.


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[RonR]

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[RonR]

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